ASTROSAT CZTI

Data Quality Report

Orbit 56159

Creation date: 2026-02-13T21:19:15.605258
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_083T04_9000006550_56159cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56159cztM0_level2_quad_clean.evt
Size (bytes)587,609,28088,968,960
Size560.4 MB 84.8 MB
Events in quadrant A4,938,572589,104
Events in quadrant B3,845,244667,769
Events in quadrant C4,256,877580,614
Events in quadrant D8,212,300408,232

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191371
B0160101
C0175101
D0289411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64165899.180175%
B64162463.834165%
C64173455.376344%
D6417191729.873773%

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 7526 6417 539 539 7.16% 8.40%
B 7526 6417 108 108 1.44% 1.68%
C 7527 6418 338 338 4.49% 5.27%
D 7527 6418 1564 1564 20.78% 24.37%

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 15 32 1253514 7496.21 668 653 167.1
A 0 8 420664 2513.04 668 653 167.1
A 12 115 172624 1028.95 668 653 167.1
B 5 185 388764 2663.23 682 660 145.7
B 5 172 232129 1588.38 682 660 145.7
B 10 247 120709 823.8 682 660 145.7
C 12 252 1564639 8705.06 655 649 179.7
C 6 9 47144 258.79 655 649 179.7
C 6 223 38803 212.36 655 649 179.7
D 8 129 2395612 15374.95 545 521 155.8
D 8 240 1823428 11701.89 545 521 155.8
D 2 62 901311 5782.49 545 521 155.8

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