ASTROSAT CZTI

Data Quality Report

Orbit 34912

Creation date: 2022-03-14T10:21:44.228721
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/AS1A11_086T01_9000005002_34912cztM0_level2.evt modeM0/AS1A11_086T01_9000005002_34912cztM0_level2_quad_clean.evt
Size (bytes)282,709,44049,461,120
Size269.6 MB 47.2 MB
Events in quadrant A1,759,805318,828
Events in quadrant B1,876,842322,432
Events in quadrant C1,810,836322,838
Events in quadrant D2,882,516292,371

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073452
B076961
C074371
D0109031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A339580.235641%
B3395401.178203%
C3395441.296024%
D33952266.656848%

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 5218 3396 1 1 0.02% 0.03%
B 5218 3396 28 28 0.54% 0.82%
C 5218 3396 33 33 0.63% 0.97%
D 5218 3396 237 237 4.54% 6.98%

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 15 169 171359 2100.27 400 392 81.4
A 10 83 32832 398.51 400 392 81.4
A 13 6 5387 61.36 400 392 81.4
B 5 172 198227 2550.89 397 386 77.6
B 0 190 49356 631.4 397 386 77.6
B 4 232 28281 359.67 397 386 77.6
C 15 214 142679 1534.46 393 397 92.7
C 0 10 101171 1086.81 393 397 92.7
C 12 250 17280 182.08 393 397 92.7
D 7 223 660749 7127.37 381 371 92.7
D 8 195 601821 6491.36 381 371 92.7
D 7 38 48257 516.83 381 371 92.7

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