ASTROSAT CZTI

Data Quality Report

Orbit 54308

Creation date: 2025-10-12T08:24:05.676581
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_126T15_9000006516_54308cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54308cztM0_level2_quad_clean.evt
Size (bytes)673,580,16085,152,960
Size642.4 MB 81.2 MB
Events in quadrant A3,172,240630,242
Events in quadrant B3,985,639652,981
Events in quadrant C4,168,500575,041
Events in quadrant D13,080,606247,403

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144441
B0165181
C0175571
D0434631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6777610.900103%
B67772814.146377%
C67784326.373562%
D6778410860.607849%

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 7662 6778 40 40 0.52% 0.59%
B 7662 6778 207 207 2.70% 3.05%
C 7663 6779 373 373 4.87% 5.50%
D 7663 6778 3586 3586 46.80% 52.91%

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 7 29 182946 1063.81 697 681 171.3
A 4 78 103162 598.14 697 681 171.3
A 15 174 79206 458.32 697 681 171.3
B 10 245 595847 4039.19 680 655 147.4
B 7 0 296175 2005.51 680 655 147.4
B 5 185 126112 851.4 680 655 147.4
C 1 241 1102324 5983.8 664 656 184.1
C 1 29 117500 634.65 664 656 184.1
C 15 157 112386 606.87 664 656 184.1
D 8 176 9432205 76525.13 425 404 123.3
D 2 172 1549757 12570.71 425 404 123.3
D 3 12 200041 1619.76 425 404 123.3

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