ASTROSAT CZTI

Data Quality Report

Orbit 34699

Creation date: 2022-07-18T19:18:52.110849
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/AS1A07_138T08_9000004970_34699cztM0_level2.evt modeM0/AS1A07_138T08_9000004970_34699cztM0_level2_quad_clean.evt
Size (bytes)432,046,08065,554,560
Size412.0 MB 62.5 MB
Events in quadrant A2,618,769420,515
Events in quadrant B3,398,887410,565
Events in quadrant C2,678,033413,988
Events in quadrant D4,049,154388,642

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107293
B0131742
C0106962
D0155452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5007210.419413%
B50073066.111444%
C5007400.798882%
D50071052.097064%

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 7100 5008 10 10 0.14% 0.20%
B 7100 5008 211 211 2.97% 4.21%
C 7100 5008 32 32 0.45% 0.64%
D 7100 5008 72 72 1.01% 1.44%

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 15 174 132030 1078.59 610 598 121.9
A 9 143 47308 383.32 610 598 121.9
A 10 83 46870 379.73 610 598 121.9
B 5 255 623624 5690.62 584 569 109.5
B 5 172 329695 3006.04 584 569 109.5
B 4 232 68947 624.52 584 569 109.5
C 15 214 220801 1645.55 581 587 133.8
C 0 10 145951 1086.23 581 587 133.8
C 3 233 25001 182.43 581 587 133.8
D 8 195 1233157 8589.42 584 568 143.5
D 2 250 118835 824.16 584 568 143.5
D 13 249 101621 704.2 584 568 143.5

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