ASTROSAT CZTI

Data Quality Report

Orbit 20220806_A09_138T04_9000005282_level2

Creation date: 2022-08-12T20:39:19.527999
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_138T04_9000005282cztM0_level2_bc.evt modeM0/AS1A09_138T04_9000005282cztM0_level2_quad_clean.evt
Size (bytes)9,960,684,4802,818,774,080
Size9.3 GB 2.6 GB
Events in quadrant A60,758,84917,898,009
Events in quadrant B69,606,53417,738,401
Events in quadrant C62,552,17817,443,494
Events in quadrant D93,102,35516,537,904

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047080
B047080
C047080
D047080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04985150
B05585970
C04950200
D06415250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08800
B08800
C08800
D08800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23011414480.629253%
B23011388293.836811%
C23011415430.670537%
D230114110454.799795%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 316859 230141 120 120 0.04% 0.05%
B 316858 230089 519 519 0.16% 0.23%
C 316858 230118 338 338 0.11% 0.15%
D 316859 230081 1601 1601 0.51% 0.70%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 8947658 3327.39 12133 11950 2685.5
A 7 3 1585248 585.85 12133 11950 2685.5
A 15 237 1424927 526.15 12133 11950 2685.5
B 5 184 8183476 3488.61 11928 11668 2342.4
B 5 172 7430776 3167.28 11928 11668 2342.4
B 0 229 2014620 855.08 11928 11668 2342.4
C 15 214 9207773 3479.06 11669 11605 2643.3
C 0 10 3028119 1141.2 11669 11605 2643.3
C 1 23 1291673 484.27 11669 11605 2643.3
D 1 52 8310939 3037.91 11601 11278 2732.0
D 13 249 4867636 1777.56 11601 11278 2732.0
D 1 47 4435171 1619.27 11601 11278 2732.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter