ASTROSAT CZTI

Data Quality Report

Orbit 45020

Creation date: 2024-06-27T23:09:04.748247
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/AS1A13_020T01_9000006040_45020cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45020cztM0_level2_quad_clean.evt
Size (bytes)1,885,115,520345,833,280
Size1.8 GB 329.8 MB
Events in quadrant A17,452,8462,368,688
Events in quadrant B12,749,7642,414,313
Events in quadrant C10,489,5442,364,793
Events in quadrant D27,354,4801,774,637

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04560
B04560
C04560
D04560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0694634
B0533284
C0473774
D0970894

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A224913531.569517%
B224916753.001200%
C224911920.853675%
D22491362616.122004%

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 25011 22495 17 17 0.07% 0.08%
B 25011 22495 291 291 1.16% 1.29%
C 25011 22495 96 96 0.38% 0.43%
D 25011 22495 3017 3017 12.06% 13.41%

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 10 83 7663635 14931.51 2498 2440 513.1
A 0 243 58056 108.39 2498 2440 513.1
A 13 248 42475 78.03 2498 2440 513.1
B 0 189 1610244 3321.52 2475 2398 484.1
B 5 255 342492 702.57 2475 2398 484.1
B 5 172 210574 430.05 2475 2398 484.1
C 14 254 470810 807.07 2480 2502 580.3
C 1 3 161692 274.34 2480 2502 580.3
C 3 233 122065 206.05 2480 2502 580.3
D 11 241 8134156 13734.94 2338 2268 592.1
D 13 174 2561861 4323.21 2338 2268 592.1
D 13 249 2089749 3525.8 2338 2268 592.1

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