ASTROSAT CZTI

Data Quality Report

Orbit 57353

Creation date: 2026-05-05T04:54:13.856398
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_102T01_9000006572_57353cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57353cztM0_level2_quad_clean.evt
Size (bytes)504,478,08095,258,880
Size481.1 MB 90.8 MB
Events in quadrant A3,640,991635,046
Events in quadrant B3,898,927646,609
Events in quadrant C4,445,676576,353
Events in quadrant D6,126,030522,070

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162693
B0167783
C0185343
D0233093

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7240400.552486%
B72402803.867403%
C72402723.756906%
D724077310.676796%

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 8025 7517 15 15 0.19% 0.20%
B 8025 7517 110 110 1.37% 1.46%
C 8025 7517 228 228 2.84% 3.03%
D 8025 7517 687 687 8.56% 9.14%

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 3 14 466954 2405.99 782 763 193.8
A 4 95 57021 290.35 782 763 193.8
A 0 12 47364 240.51 782 763 193.8
B 5 185 565643 3360.57 765 737 168.1
B 7 252 95925 566.26 765 737 168.1
B 1 223 40742 237.99 765 737 168.1
C 15 224 812346 4016.76 740 731 202.1
C 12 252 232880 1148.93 740 731 202.1
C 13 3 178965 882.1 740 731 202.1
D 8 240 2625987 12719.98 719 684 206.4
D 2 249 437837 2118.07 719 684 206.4
D 8 48 49875 238.34 719 684 206.4

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