ASTROSAT CZTI

Data Quality Report

Orbit 52961

Creation date: 2025-07-17T10:26:44.519054
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/AS1A13_003T01_9000006486_52961cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52961cztM0_level2_quad_clean.evt
Size (bytes)790,632,00083,704,320
Size754.0 MB 79.8 MB
Events in quadrant A10,298,564386,302
Events in quadrant B4,354,495668,858
Events in quadrant C4,518,561580,483
Events in quadrant D9,593,658446,996

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350091
B0173721
C0181381
D0330581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6479287144.312394%
B64793685.679889%
C64803956.095679%
D6480154823.888889%

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 7624 6479 2669 2669 35.01% 41.19%
B 7624 6480 267 267 3.50% 4.12%
C 7625 6481 341 341 4.47% 5.26%
D 7625 6481 1433 1433 18.79% 22.11%

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 9 191 7201833 53897.0 535 523 133.6
A 4 249 607263 4541.04 535 523 133.6
A 0 8 202695 1513.12 535 523 133.6
B 10 63 858998 5934.62 675 653 144.6
B 10 254 414899 2864.11 675 653 144.6
B 5 185 139251 958.27 675 653 144.6
C 15 147 594153 3352.5 649 645 177.0
C 13 3 551673 3112.54 649 645 177.0
C 7 80 355795 2006.1 649 645 177.0
D 8 176 3327574 19610.0 589 561 169.7
D 2 62 2036424 11999.74 589 561 169.7
D 15 78 1380985 8136.46 589 561 169.7

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