ASTROSAT CZTI

Data Quality Report

Orbit 53544

Creation date: 2025-08-22T11:06:42.281208
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_004T05_9000006502_53544cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53544cztM0_level2_quad_clean.evt
Size (bytes)750,133,44081,486,720
Size715.4 MB 77.7 MB
Events in quadrant A11,110,481270,428
Events in quadrant B3,997,080663,615
Events in quadrant C7,638,395516,577
Events in quadrant D4,527,743572,143

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373611
B0162621
C0270113
D0175961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6366403363.352183%
B63673886.093922%
C6366133220.923657%
D63662824.429783%

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 7486 6366 3351 3351 44.76% 52.64%
B 7487 6367 149 149 1.99% 2.34%
C 7486 6366 1271 1271 16.98% 19.97%
D 7486 6366 216 216 2.89% 3.39%

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 63 8787866 75389.42 466 454 116.6
A 15 174 306674 2627.14 466 454 116.6
A 3 62 128854 1101.58 466 454 116.6
B 5 185 418030 2853.05 693 670 146.3
B 8 128 239086 1629.8 693 670 146.3
B 8 234 125263 851.71 693 670 146.3
C 4 5 2252573 12665.59 646 643 177.8
C 15 224 1847236 10385.85 646 643 177.8
C 1 241 302704 1698.89 646 643 177.8
D 13 153 578658 2916.62 692 661 198.2
D 2 120 247994 1248.06 692 661 198.2
D 2 153 204616 1029.17 692 661 198.2

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