ASTROSAT CZTI

Data Quality Report

Orbit 31538

Creation date: 2024-06-27T20:29:41.916943
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/AS1A10_056T01_9000004598_31538cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31538cztM0_level2_quad_clean.evt
Size (bytes)326,710,08062,222,400
Size311.6 MB 59.3 MB
Events in quadrant A1,893,699413,835
Events in quadrant B3,043,898412,214
Events in quadrant C2,038,207408,588
Events in quadrant D2,655,316376,744

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103072079
B0151553302
C0106982060
D0128242349

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0111
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010220
B010523
C010325
D010123

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3862421.087519%
B38141092.857892%
C38861082.779207%
D38622897.483169%

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 6428 3968 0 0 0.00% 0.00%
B 5866 3909 4 4 0.07% 0.10%
C 6446 4000 5 5 0.08% 0.12%
D 5865 3963 219 219 3.73% 5.53%

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 13 254 6932 66.07 489 478 97.7
A 3 137 4985 46.14 489 478 97.7
A 0 226 4214 38.25 489 478 97.7
B 6 159 1057263 11482.06 480 469 92.0
B 4 80 74103 800.03 480 469 92.0
B 12 111 11168 116.24 480 469 92.0
C 14 238 77131 686.8 474 476 111.6
C 3 233 51512 457.26 474 476 111.6
C 0 10 33296 294.05 474 476 111.6
D 13 249 577041 5276.95 457 445 109.3
D 8 195 244268 2231.44 457 445 109.3
D 12 218 71462 649.94 457 445 109.3

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