ASTROSAT CZTI

Data Quality Report

Orbit 56318

Creation date: 2026-02-24T13:48:31.712230
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/AS1A14_049T01_9000006552_56318cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56318cztM0_level2_quad_clean.evt
Size (bytes)600,638,40090,722,880
Size572.8 MB 86.5 MB
Events in quadrant A9,443,479454,084
Events in quadrant B4,302,677670,543
Events in quadrant C3,254,208620,351
Events in quadrant D4,732,005551,728

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325642
B0171392
C0141842
D0185152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6376213233.437892%
B64884587.059186%
C64881081.664612%
D64884546.997534%

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 8788 6379 1927 1927 21.93% 30.21%
B 8788 6490 199 199 2.26% 3.07%
C 8788 6490 11 11 0.13% 0.17%
D 8788 6490 363 363 4.13% 5.59%

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 11 31 2200693 13981.78 641 624 157.4
A 4 95 2101945 13354.22 641 624 157.4
A 15 32 1069556 6793.23 641 624 157.4
B 5 185 682641 4546.86 707 683 150.0
B 0 231 223284 1484.16 707 683 150.0
B 1 255 208954 1388.62 707 683 150.0
C 12 252 211180 1083.19 714 707 194.3
C 13 3 60597 308.22 714 707 194.3
C 15 198 52120 264.6 714 707 194.3
D 8 160 889815 4506.22 695 661 197.3
D 7 96 255061 1289.3 695 661 197.3
D 2 249 205523 1038.24 695 661 197.3

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