ASTROSAT CZTI

Data Quality Report

Orbit 56403

Creation date: 2026-03-02T12:01:58.257096
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_083T05_9000006554_56403cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56403cztM0_level2_quad_clean.evt
Size (bytes)868,417,92066,044,160
Size828.2 MB 63.0 MB
Events in quadrant A14,974,708324,584
Events in quadrant B6,333,939624,594
Events in quadrant C3,311,079591,970
Events in quadrant D7,021,542827

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0486810
B0232990
C0145960
D0255190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6475490475.737452%
B6475118718.332046%
C6476580.895615%
D64766476100.000000%

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 7585 6476 4616 4616 60.86% 71.28%
B 7585 6475 724 724 9.55% 11.18%
C 7586 6477 53 53 0.70% 0.82%
D 7585 6475 859 859 11.32% 13.27%

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 3 9893995 108604.98 361 352 91.1
A 4 95 1447432 15884.96 361 352 91.1
A 12 194 1182337 12974.94 361 352 91.1
B 4 206 1920429 14366.05 633 610 133.6
B 5 172 815423 6097.26 633 610 133.6
B 5 185 460420 3440.76 633 610 133.6
C 12 254 297226 1616.07 668 662 183.5
C 12 249 205667 1117.14 668 662 183.5
C 15 230 54317 292.38 668 662 183.5
D 8 129 6943530 1252699.3 14 13 5.5
D 2 249 5683 1022.94 14 13 5.5
D 8 113 2546 456.99 14 13 5.5

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