ASTROSAT CZTI

Data Quality Report

Orbit 54188

Creation date: 2025-10-04T06:05:41.583117
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_012T01_9000006512_54188cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54188cztM0_level2_quad_clean.evt
Size (bytes)578,108,160114,863,040
Size551.3 MB 109.5 MB
Events in quadrant A5,259,345750,602
Events in quadrant B4,775,490813,185
Events in quadrant C5,744,156679,857
Events in quadrant D4,990,649670,341

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214850
B0200590
C0231280
D0208010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81152382.932840%
B81152272.797289%
C81167409.117792%
D81153223.967961%

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 8115 8115 199 199 2.45% 2.45%
B 8115 8115 122 122 1.50% 1.50%
C 8116 8116 594 594 7.32% 7.32%
D 8115 8115 281 281 3.46% 3.46%

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 4 5 743331 3475.72 854 832 213.6
A 15 174 338960 1582.81 854 832 213.6
A 3 130 167401 779.73 854 832 213.6
B 4 171 515858 2844.63 850 818 181.1
B 15 20 262749 1446.68 850 818 181.1
B 5 185 199658 1098.22 850 818 181.1
C 1 241 1151107 5151.92 812 804 223.3
C 15 215 499787 2234.82 812 804 223.3
C 12 2 303010 1353.51 812 804 223.3
D 8 176 1065047 4510.22 828 792 236.0
D 3 12 208230 879.1 828 792 236.0
D 11 176 143985 606.84 828 792 236.0

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