ASTROSAT CZTI

Data Quality Report

Orbit 00215

Creation date: 2024-06-27T13:58:00.990916
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/AS1P01_118T01_9000000020_00215cztM0_level2.evt modeM0/AS1P01_118T01_9000000020_00215cztM0_level2_quad_clean.evt
Size (bytes)813,317,76069,649,920
Size775.6 MB 66.4 MB
Events in quadrant A7,193,328437,534
Events in quadrant B6,032,055450,655
Events in quadrant C5,487,330435,578
Events in quadrant D5,580,092428,253

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249240
B0215430
C0199400
D0202000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5092170.333857%
B5092210.412412%
C5092500.981932%
D5092290.569521%

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 6797 5093 487 487 7.16% 9.56%
B 6797 5093 112 112 1.65% 2.20%
C 6796 5092 80 80 1.18% 1.57%
D 6797 5093 79 79 1.16% 1.55%

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 15 127 1189717 3516.61 1541 1532 337.9
A 11 242 13179 34.47 1541 1532 337.9
A 0 253 11323 28.98 1541 1532 337.9
B 14 50 75859 206.63 1523 1536 359.7
B 5 46 71290 193.93 1523 1536 359.7
B 0 183 20822 53.62 1523 1536 359.7
C 0 186 140767 365.3 1357 1403 381.5
C 0 206 7917 17.07 1357 1403 381.5
C 1 192 7256 15.34 1357 1403 381.5
D 1 4 203581 484.34 1330 1379 417.5
D 2 33 72367 170.04 1330 1379 417.5
D 13 117 50333 117.26 1330 1379 417.5

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