ASTROSAT CZTI

Data Quality Report

Orbit 17369

Creation date: 2024-06-27T17:35:34.662114
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_012T02_9000002566_17369cztM0_level2.evt modeM0/AS1A05_012T02_9000002566_17369cztM0_level2_quad_clean.evt
Size (bytes)201,600,00025,626,240
Size192.3 MB 24.4 MB
Events in quadrant A1,387,138153,816
Events in quadrant B1,398,707153,637
Events in quadrant C1,407,575146,848
Events in quadrant D1,743,672144,949

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057111
B057521
C058171
D069291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2447873.555374%
B24471064.331835%
C24471214.944830%
D24471516.170821%

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 3777 2448 0 0 0.00% 0.00%
B 3777 2448 0 0 0.00% 0.00%
C 3777 2447 0 0 0.00% 0.00%
D 3777 2448 36 36 0.95% 1.47%

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 0 226 3061 37.13 361 353 72.9
A 12 194 2599 30.79 361 353 72.9
A 3 137 2478 29.13 361 353 72.9
B 12 111 7378 102.49 356 348 68.6
B 4 216 6901 95.54 356 348 68.6
B 11 111 6426 88.61 356 348 68.6
C 14 238 52749 653.08 342 344 80.2
C 3 233 17920 219.03 342 344 80.2
C 13 61 2469 26.48 342 344 80.2
D 13 232 248271 2954.36 346 336 83.9
D 2 152 57855 685.39 346 336 83.9
D 11 176 33649 396.95 346 336 83.9

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