ASTROSAT CZTI

Data Quality Report

Orbit 56537

Creation date: 2026-03-11T07:15:35.826120
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_060T01_9000006556_56537cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56537cztM0_level2_quad_clean.evt
Size (bytes)391,141,44093,856,320
Size373.0 MB 89.5 MB
Events in quadrant A3,543,523606,433
Events in quadrant B3,413,460672,362
Events in quadrant C3,646,873578,710
Events in quadrant D3,384,481544,378

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146792
B0144792
C0153342
D0144662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63001722.730159%
B6300961.523810%
C62992544.032386%
D62991292.047944%

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 7455 6301 102 102 1.37% 1.62%
B 7455 6301 25 25 0.34% 0.40%
C 7454 6300 228 228 3.06% 3.62%
D 7454 6300 83 83 1.11% 1.32%

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 7 64 300991 1749.83 692 675 171.6
A 13 153 250831 1457.57 692 675 171.6
A 4 95 110031 637.18 692 675 171.6
B 5 172 174430 1172.3 695 671 148.2
B 10 246 87414 585.23 695 671 148.2
B 4 206 79822 534.0 695 671 148.2
C 12 252 782884 4308.1 669 662 181.6
C 14 254 138881 761.24 669 662 181.6
C 6 223 89405 488.75 669 662 181.6
D 2 249 294951 1540.93 668 636 191.0
D 8 240 128582 669.88 668 636 191.0
D 8 129 101212 526.58 668 636 191.0

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