ASTROSAT CZTI

Data Quality Report

Orbit 52480

Creation date: 2025-06-26T16:38:03.572717
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/AS1A13_037T01_9000006476_52480cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52480cztM0_level2_quad_clean.evt
Size (bytes)820,085,76078,073,920
Size782.1 MB 74.5 MB
Events in quadrant A3,184,615650,513
Events in quadrant B5,222,762687,660
Events in quadrant C4,703,606566,926
Events in quadrant D16,735,729697

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142292
B0200042
C0188398
D0542482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6568620.943971%
B65682513.821559%
C65675959.060454%
D6567656299.923862%

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 7623 6569 9 9 0.12% 0.14%
B 7623 6569 152 152 1.99% 2.31%
C 7622 6568 420 420 5.51% 6.39%
D 7621 6566 6238 6238 81.85% 95.00%

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 3 97023 537.62 716 699 179.2
A 8 249 96781 536.27 716 699 179.2
A 13 248 33597 183.62 716 699 179.2
B 10 254 1671356 10994.09 706 682 152.0
B 0 213 164317 1076.82 706 682 152.0
B 10 44 162146 1062.54 706 682 152.0
C 15 224 1060876 5814.31 668 663 182.3
C 13 3 361775 1980.37 668 663 182.3
C 2 12 146784 801.34 668 663 182.3
D 15 93 13254222 264721.48 168 161 50.1
D 6 42 2572041 51367.79 168 161 50.1
D 8 176 144797 2888.79 168 161 50.1

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