ASTROSAT CZTI

Data Quality Report

Orbit 52575

Creation date: 2025-06-17T16:07:30.533000
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/AS1C09_011T06_9000006478_52575cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52575cztM0_level2_quad_clean.evt
Size (bytes)659,021,76098,890,560
Size628.5 MB 94.3 MB
Events in quadrant A3,797,262668,688
Events in quadrant B6,416,054691,953
Events in quadrant C3,620,839647,297
Events in quadrant D9,989,258473,258

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167670
B0242480
C0162680
D0348450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73731221.654686%
B73745207.051804%
C7374410.556008%
D7374186625.305126%

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 7373 7373 106 106 1.44% 1.44%
B 7374 7374 349 349 4.73% 4.73%
C 7374 7374 35 35 0.47% 0.47%
D 7374 7374 1838 1838 24.93% 24.93%

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 3 114 337753 1799.17 752 734 187.3
A 5 243 110274 584.78 752 734 187.3
A 13 248 72375 382.45 752 734 187.3
B 10 254 1836708 11675.62 734 709 157.3
B 10 44 910541 5785.87 734 709 157.3
B 4 171 202971 1286.24 734 709 157.3
C 12 249 269747 1346.16 728 724 199.8
C 15 248 146599 729.94 728 724 199.8
C 15 158 117779 585.73 728 724 199.8
D 15 125 2422802 12952.15 646 616 187.0
D 8 176 2126701 11368.81 646 616 187.0
D 6 42 934048 4991.34 646 616 187.0

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