ASTROSAT CZTI

Data Quality Report

Orbit 55912

Creation date: 2026-01-30T18:06:07.557999
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_030T02_9000006544_55912cztM0_level2.fits modeM0/AS1A14_030T02_9000006544_55912cztM0_level2_quad_clean.evt
Size (bytes)514,154,88091,244,160
Size490.3 MB 87.0 MB
Events in quadrant A4,383,962603,789
Events in quadrant B2,856,918672,863
Events in quadrant C3,378,486592,661
Events in quadrant D7,914,980446,141

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175862
B0133422
C0148892
D0279262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64131612.510525%
B6413230.358646%
C6413831.294246%
D6413147823.046936%

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 7583 6414 165 165 2.18% 2.57%
B 7583 6414 4 4 0.05% 0.06%
C 7582 6413 68 68 0.90% 1.06%
D 7583 6413 1447 1447 19.08% 22.56%

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 12 115 1263116 7676.29 663 647 164.5
A 15 32 311345 1889.16 663 647 164.5
A 4 249 84532 510.05 663 647 164.5
B 5 185 92914 649.22 670 647 142.1
B 7 252 37073 256.3 670 647 142.1
B 12 111 17329 117.38 670 647 142.1
C 12 252 465579 2557.23 660 652 181.8
C 15 199 299549 1644.02 660 652 181.8
C 13 3 25153 134.76 660 652 181.8
D 11 129 5129291 30827.13 590 565 166.4
D 7 129 147601 883.79 590 565 166.4
D 3 12 119271 713.5 590 565 166.4

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