ASTROSAT CZTI

Data Quality Report

Orbit 54821

Creation date: 2025-11-15T20:02:59.058063
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_039T06_9000006526_54821cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54821cztM0_level2_quad_clean.evt
Size (bytes)470,854,08095,567,040
Size449.0 MB 91.1 MB
Events in quadrant A3,001,628641,959
Events in quadrant B3,328,983688,677
Events in quadrant C3,926,266604,834
Events in quadrant D6,663,019501,015

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137232
B0145302
C0162942
D0242842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65561081.647346%
B65561402.135448%
C65562343.569250%
D655699615.192190%

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 7671 6558 8 8 0.10% 0.12%
B 7671 6558 27 27 0.35% 0.41%
C 7671 6558 154 154 2.01% 2.35%
D 7671 6558 908 908 11.84% 13.85%

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 15 57936 314.9 728 710 181.7
A 6 161 15014 78.71 728 710 181.7
A 0 8 14156 73.99 728 710 181.7
B 10 247 201113 1319.99 710 685 151.8
B 2 249 153581 1006.95 710 685 151.8
B 5 185 128049 838.8 710 685 151.8
C 4 5 503627 2640.2 697 690 190.5
C 9 38 233540 1222.36 697 690 190.5
C 6 223 128730 672.15 697 690 190.5
D 1 31 2456807 13132.84 657 630 187.0
D 11 129 489002 2611.26 657 630 187.0
D 10 181 288407 1538.7 657 630 187.0

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