ASTROSAT CZTI

Data Quality Report

Orbit 19159

Creation date: 2024-06-27T17:59:38.372720
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_046T01_9000002838_19159cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19159cztM0_level2_quad_clean.evt
Size (bytes)2,143,327,680331,050,240
Size2.0 GB 315.7 MB
Events in quadrant A13,967,7572,016,910
Events in quadrant B14,354,9732,081,278
Events in quadrant C21,353,5891,997,527
Events in quadrant D13,322,3331,981,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0601494
B0607594
C0838634
D0592644

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05760
B05760
C05760
D05760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A283506912.437390%
B283505141.813051%
C2835210883.837472%
D283523661.290914%

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 37622 28354 230 230 0.61% 0.81%
B 37622 28355 59 59 0.16% 0.21%
C 37623 28355 95 95 0.25% 0.34%
D 37623 28357 41 41 0.11% 0.14%

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 15 174 776260 1120.98 3405 3324 689.5
A 13 254 35087 46.06 3405 3324 689.5
A 0 226 29462 37.91 3405 3324 689.5
B 7 220 450725 684.62 3416 3324 653.5
B 3 64 156237 233.99 3416 3324 653.5
B 6 36 109986 163.22 3416 3324 653.5
C 3 233 7966403 10284.96 3287 3302 774.2
C 14 238 502411 644.64 3287 3302 774.2
C 0 207 54287 65.85 3287 3302 774.2
D 1 52 336817 409.78 3357 3262 814.0
D 11 176 269788 327.43 3357 3262 814.0
D 2 234 120402 143.91 3357 3262 814.0

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