ASTROSAT CZTI

Data Quality Report

Orbit 41117

Creation date: 2024-06-27T22:24:42.229671
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/AS1A12_052T04_9000005602_41117cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41117cztM0_level2_quad_clean.evt
Size (bytes)414,057,60092,528,640
Size394.9 MB 88.2 MB
Events in quadrant A3,140,821642,250
Events in quadrant B5,482,241570,827
Events in quadrant C2,806,815612,175
Events in quadrant D3,448,929573,362

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127453
B0201812
C0120172
D0142182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5762150.260326%
B576289815.584866%
C5762540.937175%
D5763941.631095%

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 7134 5763 5 5 0.07% 0.09%
B 7134 5763 720 720 10.09% 12.49%
C 7134 5763 46 46 0.64% 0.80%
D 7135 5764 92 92 1.29% 1.60%

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 10 83 541860 4140.78 636 623 130.7
A 2 79 60044 454.61 636 623 130.7
A 13 248 55588 420.51 636 623 130.7
B 0 245 2950061 25146.25 600 581 117.3
B 0 186 106451 902.61 600 581 117.3
B 0 190 47564 400.56 600 581 117.3
C 15 214 246374 1728.76 614 620 142.2
C 0 10 142381 997.22 614 620 142.2
C 14 254 11439 76.11 614 620 142.2
D 12 217 246082 1631.82 616 596 150.4
D 2 16 207066 1372.47 616 596 150.4
D 9 49 202821 1344.25 616 596 150.4

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