ASTROSAT CZTI

Data Quality Report

Orbit 31342

Creation date: 2024-06-27T20:27:01.821195
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/AS1A10_053T40_9000004542_31342cztM0_level2.evt modeM0/AS1A10_053T40_9000004542_31342cztM0_level2_quad_clean.evt
Size (bytes)310,852,80047,183,040
Size296.5 MB 45.0 MB
Events in quadrant A1,888,601300,140
Events in quadrant B3,004,685294,375
Events in quadrant C2,175,574281,430
Events in quadrant D2,089,955287,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078952
B0116191
C087241
D086501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37381153.076512%
B37381915.109684%
C37382827.544141%
D3738942.514714%

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 4168 3739 0 0 0.00% 0.00%
B 4168 3739 6 6 0.14% 0.16%
C 4168 3739 17 17 0.41% 0.45%
D 4168 3739 3 3 0.07% 0.08%

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 13 254 6754 62.83 489 479 99.9
A 3 137 5011 45.38 489 479 99.9
A 0 226 4221 37.47 489 479 99.9
B 6 159 1028731 10792.99 475 463 95.3
B 0 190 41857 434.48 475 463 95.3
B 5 172 21475 220.55 475 463 95.3
C 3 233 119621 1095.4 454 455 108.8
C 14 238 109076 998.47 454 455 108.8
C 0 10 85272 779.66 454 455 108.8
D 8 195 234369 2056.71 471 458 113.7
D 12 79 39464 342.97 471 458 113.7
D 2 234 15261 130.16 471 458 113.7

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