ASTROSAT CZTI

Data Quality Report

Orbit 36436

Creation date: 2022-07-19T03:50:38.474028
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/AS1C07_009T01_9000005200_36436cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36436cztM0_level2_quad_clean.evt
Size (bytes)403,225,92060,327,360
Size384.5 MB 57.5 MB
Events in quadrant A2,517,668385,859
Events in quadrant B3,434,273380,776
Events in quadrant C3,049,739362,928
Events in quadrant D2,875,848352,081

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105143
B0134092
C0119882
D0117102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4922150.304754%
B49222505.079236%
C49221513.067859%
D49221192.417716%

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 7044 4923 8 8 0.11% 0.16%
B 7044 4923 161 161 2.29% 3.27%
C 7044 4923 110 110 1.56% 2.23%
D 7044 4923 94 94 1.33% 1.91%

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 190864 1612.93 590 580 118.0
A 7 3 33557 279.53 590 580 118.0
A 13 254 9125 72.43 590 580 118.0
B 5 172 851938 7928.46 574 562 107.4
B 0 189 141538 1312.84 574 562 107.4
B 5 255 71974 665.03 574 562 107.4
C 3 233 379496 2979.74 558 564 127.2
C 0 10 226709 1778.29 558 564 127.2
C 15 214 212396 1665.74 558 564 127.2
D 10 118 198175 1455.31 563 548 135.8
D 2 137 114000 835.45 563 548 135.8
D 13 249 104158 762.97 563 548 135.8

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