ASTROSAT CZTI

Data Quality Report

Orbit 08158

Creation date: 2024-06-27T15:29:02.229562
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/AS1G07_046T01_9000001124_08158cztM0_level2.evt modeM0/AS1G07_046T01_9000001124_08158cztM0_level2_quad_clean.evt
Size (bytes)1,491,989,760266,886,720
Size1.4 GB 254.5 MB
Events in quadrant A10,113,1231,653,058
Events in quadrant B10,737,3411,666,119
Events in quadrant C10,660,6721,672,569
Events in quadrant D12,184,1821,575,256

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0466561602
B0478801643
C0475941655
D0538281930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046612
B046618
C046612
D046610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A220301940.880617%
B220152361.071996%
C220021170.531770%
D219845212.369905%

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 25481 22394 0 0 0.00% 0.00%
B 25481 22362 27 27 0.11% 0.12%
C 25481 22382 0 0 0.00% 0.00%
D 25481 22339 238 238 0.93% 1.07%

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 24884 41.7 2618 2561 535.3
A 12 194 23280 38.71 2618 2561 535.3
A 13 251 21161 34.75 2618 2561 535.3
B 0 214 321976 641.26 2623 2561 498.1
B 10 16 108353 212.39 2623 2561 498.1
B 0 219 53479 102.22 2623 2561 498.1
C 1 16 729917 1228.39 2539 2555 592.1
C 13 61 19302 28.28 2539 2555 592.1
C 8 222 15664 22.14 2539 2555 592.1
D 2 152 852313 1375.11 2520 2446 618.0
D 5 233 618671 997.07 2520 2446 618.0
D 13 105 348538 559.99 2520 2446 618.0

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