ASTROSAT CZTI

Data Quality Report

Orbit 56147

Creation date: 2026-03-07T09:38:22.270539
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_56147cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56147cztM0_level2_quad_clean.evt
Size (bytes)846,492,48096,721,920
Size807.3 MB 92.2 MB
Events in quadrant A9,149,159599,430
Events in quadrant B4,366,945743,812
Events in quadrant C11,997,030449,306
Events in quadrant D5,240,678613,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324682
B0182272
C0408862
D0209052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7508143119.059670%
B75083074.088972%
C7508288038.359084%
D75092573.422560%

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 7588 7508 1397 1397 18.41% 18.61%
B 7588 7510 197 197 2.60% 2.62%
C 7588 7510 2782 2782 36.66% 37.04%
D 7589 7511 226 226 2.98% 3.01%

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 3329375 17898.73 752 733 186.0
A 7 64 1209804 6501.4 752 733 186.0
A 3 14 579014 3109.53 752 733 186.0
B 4 171 579076 3461.24 787 759 167.1
B 5 185 185226 1104.04 787 759 167.1
B 10 247 85566 507.57 787 759 167.1
C 9 38 5647846 32684.51 628 623 172.8
C 15 147 1652860 9562.68 628 623 172.8
C 15 148 1425915 8249.18 628 623 172.8
D 8 240 557699 2594.47 756 722 214.7
D 2 62 490094 2279.56 756 722 214.7
D 2 249 363582 1690.25 756 722 214.7

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