ASTROSAT CZTI

Data Quality Report

Orbit 57423

Creation date: 2026-05-09T21:44:29.980379
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_102T01_9000006572_57423cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57423cztM0_level2_quad_clean.evt
Size (bytes)566,553,60087,030,720
Size540.3 MB 83.0 MB
Events in quadrant A8,085,228569,460
Events in quadrant B3,154,428627,926
Events in quadrant C5,585,556499,749
Events in quadrant D3,686,525522,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280191
B0136941
C0208701
D0151341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59455519.268293%
B5946911.530441%
C594680913.605785%
D59461883.161789%

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 7085 5946 432 432 6.10% 7.27%
B 7086 5947 10 10 0.14% 0.17%
C 7086 5947 725 725 10.23% 12.19%
D 7086 5947 167 167 2.36% 2.81%

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 4748561 30268.42 633 618 156.9
A 10 251 560880 3571.7 633 618 156.9
A 7 64 264265 1680.77 633 618 156.9
B 0 216 389491 2858.22 636 612 136.1
B 5 185 107537 785.89 636 612 136.1
B 0 245 28808 207.24 636 612 136.1
C 15 224 2812635 17607.79 581 574 159.7
C 14 254 255287 1594.89 581 574 159.7
C 6 223 193240 1206.38 581 574 159.7
D 15 142 340151 1947.08 618 590 174.4
D 7 96 265159 1517.07 618 590 174.4
D 8 240 167144 955.04 618 590 174.4

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