ASTROSAT CZTI

Data Quality Report

Orbit 55622

Creation date: 2026-01-09T20:25:06.938347
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_021T06_9000006538_55622cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55622cztM0_level2_quad_clean.evt
Size (bytes)501,396,48089,311,680
Size478.2 MB 85.2 MB
Events in quadrant A4,966,472566,486
Events in quadrant B2,727,632655,286
Events in quadrant C3,645,958564,857
Events in quadrant D6,718,253467,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191961
B0131571
C0158681
D0244091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64566139.495043%
B6457901.393836%
C64572393.701409%
D6457107916.710547%

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 7406 6456 446 446 6.02% 6.91%
B 7407 6457 4 4 0.05% 0.06%
C 7407 6458 209 209 2.82% 3.24%
D 7407 6457 1029 1029 13.89% 15.94%

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 12 115 1333488 8217.67 655 638 162.2
A 15 32 477419 2939.58 655 638 162.2
A 8 249 282609 1738.49 655 638 162.2
B 7 252 25216 174.8 660 636 140.6
B 7 0 19155 131.7 660 636 140.6
B 10 247 18352 125.99 660 636 140.6
C 13 3 479686 2772.79 635 627 172.8
C 12 2 193369 1115.59 635 627 172.8
C 12 250 125711 723.98 635 627 172.8
D 8 160 2556601 14894.46 607 579 171.6
D 11 129 980803 5711.96 607 579 171.6
D 8 245 282287 1641.57 607 579 171.6

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