ASTROSAT CZTI

Data Quality Report

Orbit 57263

Creation date: 2026-04-29T04:13:39.427802
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_049T03_9000006570_57263cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57263cztM0_level2_quad_clean.evt
Size (bytes)794,010,240135,175,680
Size757.2 MB 128.9 MB
Events in quadrant A4,804,555912,696
Events in quadrant B5,481,979926,637
Events in quadrant C12,339,132707,494
Events in quadrant D5,904,840776,578

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02285635
B02426623
C044591110
D02570428

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11103340.306224%
B111122001.799856%
C11099223920.172989%
D111091971.773337%

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 13822 11404 6 6 0.04% 0.05%
B 13823 11404 112 112 0.81% 0.98%
C 13823 11366 2086 2086 15.09% 18.35%
D 13823 11405 201 201 1.45% 1.76%

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 10 251 101042 338.05 1200 1173 295.4
A 3 14 32042 104.49 1200 1173 295.4
A 4 249 16900 53.23 1200 1173 295.4
B 5 185 425971 1689.89 1185 1144 251.4
B 7 252 111847 440.36 1185 1144 251.4
B 10 16 57744 225.14 1185 1144 251.4
C 15 224 7720534 27306.64 1040 1033 282.7
C 14 254 235913 830.85 1040 1033 282.7
C 12 254 87125 304.54 1040 1033 282.7
D 2 249 485053 1486.1 1139 1089 325.7
D 7 96 255795 782.12 1139 1089 325.7
D 2 120 200518 612.38 1139 1089 325.7

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