ASTROSAT CZTI

Data Quality Report

Orbit 57453

Creation date: 2026-05-11T22:21:28.680315
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_113T09_9000006574_57453cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57453cztM0_level2_quad_clean.evt
Size (bytes)436,567,68084,562,560
Size416.3 MB 80.6 MB
Events in quadrant A2,897,269571,205
Events in quadrant B4,474,635561,750
Events in quadrant C5,018,569501,100
Events in quadrant D3,312,616515,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130231
B0174671
C0190971
D0138961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58791001.700970%
B587867211.432460%
C587859710.156516%
D58781141.939435%

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 6904 5880 42 42 0.61% 0.71%
B 6903 5879 315 315 4.56% 5.36%
C 6903 5879 490 490 7.10% 8.33%
D 6903 5879 80 80 1.16% 1.36%

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 0 12 186580 1171.77 644 627 158.7
A 3 14 114233 715.88 644 627 158.7
A 4 95 73948 462.03 644 627 158.7
B 4 206 1510462 11629.54 606 584 129.8
B 5 185 214398 1646.86 606 584 129.8
B 10 247 92477 707.79 606 584 129.8
C 15 224 2459341 15310.41 584 578 160.6
C 14 254 104607 647.78 584 578 160.6
C 1 16 77927 481.64 584 578 160.6
D 8 240 238771 1372.5 615 586 173.5
D 7 96 211969 1218.05 615 586 173.5
D 2 252 95785 548.57 615 586 173.5

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