ASTROSAT CZTI

Data Quality Report

Orbit 31252

Creation date: 2024-06-27T20:25:38.948921
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_073T02_9000004522_31252cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31252cztM0_level2_quad_clean.evt
Size (bytes)267,122,88044,841,600
Size254.7 MB 42.8 MB
Events in quadrant A1,550,167299,517
Events in quadrant B2,306,943297,592
Events in quadrant C1,775,386284,943
Events in quadrant D2,271,632281,220

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063684
B0868112
C0713824
D0895931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2713782.875046%
B27111495.496127%
C27102137.859779%
D27091445.315615%

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 4299 2720 0 0 0.00% 0.00%
B 4298 2718 1 1 0.02% 0.04%
C 4302 2718 17 17 0.40% 0.63%
D 4302 2717 14 14 0.33% 0.52%

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 4966 56.38 401 394 81.1
A 3 137 3789 41.87 401 394 81.1
A 0 226 3396 37.02 401 394 81.1
B 6 159 699030 9345.11 389 380 74.8
B 0 190 48103 638.34 389 380 74.8
B 15 33 19982 262.2 389 380 74.8
C 0 10 134076 1532.23 375 379 87.3
C 14 238 65870 750.56 375 379 87.3
C 10 22 47730 542.66 375 379 87.3
D 8 195 731735 7258.42 384 375 100.8
D 2 250 53384 526.09 384 375 100.8
D 12 233 23508 229.58 384 375 100.8

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