ASTROSAT CZTI

Data Quality Report

Orbit 39278

Creation date: 2024-06-27T22:02:38.502860
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_037T01_9000005456_39278cztM0_level2.fits modeM0/AS1A12_037T01_9000005456_39278cztM0_level2_quad_clean.evt
Size (bytes)681,232,32080,484,480
Size649.7 MB 76.8 MB
Events in quadrant A5,849,075564,184
Events in quadrant B2,980,810663,584
Events in quadrant C2,816,634630,714
Events in quadrant D13,116,676169,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212313
B0124212
C0119102
D0429402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A584092915.907534%
B5840130.222603%
C584090.154110%
D5840455477.979452%

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 7151 5840 756 756 10.57% 12.95%
B 7151 5841 3 3 0.04% 0.05%
C 7151 5841 2 2 0.03% 0.03%
D 7151 5840 3406 3406 47.63% 58.32%

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 15 222 2930327 22811.92 624 613 128.4
A 10 83 432078 3359.56 624 613 128.4
A 13 248 44541 342.04 624 613 128.4
B 0 189 234994 1825.91 654 635 128.4
B 0 190 141706 1099.1 654 635 128.4
B 5 172 19144 144.21 654 635 128.4
C 15 214 243588 1591.76 646 649 152.6
C 3 233 42237 272.49 646 649 152.6
C 0 10 11970 74.18 646 649 152.6
D 12 235 10359830 105983.99 396 385 97.7
D 12 227 1098570 11235.16 396 385 97.7
D 5 222 37423 378.92 396 385 97.7

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