ASTROSAT CZTI

Data Quality Report

Orbit 53762

Creation date: 2025-09-05T13:23:54.443528
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_022T04_9000006506_53762cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53762cztM0_level2_quad_clean.evt
Size (bytes)972,921,60070,600,320
Size927.9 MB 67.3 MB
Events in quadrant A15,225,909121,258
Events in quadrant B3,562,624682,032
Events in quadrant C11,930,226341,156
Events in quadrant D4,781,300529,268

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0498122
B0153422
C0399062
D0189435

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6649557183.787036%
B66492463.699804%
C6649333650.172958%
D664871010.679904%

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 7683 6648 5119 5119 66.63% 77.00%
B 7684 6649 10 10 0.13% 0.15%
C 7683 6648 3240 3240 42.17% 48.74%
D 7682 6647 244 244 3.18% 3.67%

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 63 13606967 162510.28 339 332 83.7
A 0 8 111516 1327.92 339 332 83.7
A 3 78 90554 1077.56 339 332 83.7
B 5 250 453156 2931.28 718 690 154.4
B 4 81 40382 257.14 718 690 154.4
B 5 185 34934 221.85 718 690 154.4
C 1 241 6600380 46864.79 508 503 140.8
C 15 224 2348962 16676.07 508 503 140.8
C 5 10 242446 1718.0 508 503 140.8
D 2 172 912663 4837.37 667 639 188.5
D 1 241 462669 2450.61 667 639 188.5
D 13 153 301113 1593.71 667 639 188.5

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