ASTROSAT CZTI

Data Quality Report

Orbit 56037

Creation date: 2026-02-05T17:30:01.589772
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_083T03_9000006548_56037cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56037cztM0_level2_quad_clean.evt
Size (bytes)574,565,76099,740,160
Size547.9 MB 95.1 MB
Events in quadrant A8,120,615572,730
Events in quadrant B3,924,634710,025
Events in quadrant C3,420,030644,935
Events in quadrant D5,258,161602,660

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289352
B0165802
C0154739
D0204672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7024147320.970957%
B70242513.573462%
C70231592.263990%
D70233535.026342%

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 7874 7025 1132 1132 14.38% 16.11%
B 7874 7025 50 50 0.64% 0.71%
C 7872 7023 52 52 0.66% 0.74%
D 7873 7024 215 215 2.73% 3.06%

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 32 4454083 25043.06 702 685 177.8
A 7 64 590049 3314.21 702 685 177.8
A 12 79 129841 726.29 702 685 177.8
B 5 185 606078 3800.99 742 716 159.3
B 0 199 89616 558.19 742 716 159.3
B 0 213 87977 547.9 742 716 159.3
C 13 3 284532 1391.73 734 725 203.9
C 12 252 85067 413.6 734 725 203.9
C 15 199 60140 291.36 734 725 203.9
D 11 129 1389347 6554.71 731 697 211.9
D 2 31 420345 1980.82 731 697 211.9
D 8 160 138605 650.95 731 697 211.9

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