ASTROSAT CZTI

Data Quality Report

Orbit 19722

Creation date: 2024-06-27T18:06:01.068535
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/AS1A05_013T01_9000002944_19722cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19722cztM0_level2_quad_clean.evt
Size (bytes)951,445,440172,958,400
Size907.4 MB 164.9 MB
Events in quadrant A5,851,9941,123,943
Events in quadrant B6,223,3971,135,543
Events in quadrant C7,805,5021,068,166
Events in quadrant D8,088,9851,047,572

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255542
B0264682
C0315582
D0323812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124931160.928520%
B124941491.192572%
C124942552.040980%
D124948586.867296%

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 13738 12493 13 13 0.09% 0.10%
B 13739 12495 28 28 0.20% 0.22%
C 13739 12494 39 39 0.28% 0.31%
D 13739 12494 680 680 4.95% 5.44%

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 0 254 40316 127.89 1494 1460 303.8
A 0 23 32399 101.83 1494 1460 303.8
A 0 226 14680 43.51 1494 1460 303.8
B 7 220 231860 808.02 1485 1449 285.2
B 4 216 58328 199.47 1485 1449 285.2
B 12 111 34709 116.64 1485 1449 285.2
C 3 233 1979689 5971.12 1415 1425 331.3
C 14 238 219365 657.82 1415 1425 331.3
C 7 247 65070 192.1 1415 1425 331.3
D 1 52 1526611 4454.47 1409 1364 342.4
D 12 218 479284 1395.76 1409 1364 342.4
D 12 233 342955 997.61 1409 1364 342.4

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