ASTROSAT CZTI

Data Quality Report

Orbit 08620

Creation date: 2024-06-27T15:35:04.597917
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_024T01_9000001206_08620cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08620cztM0_level2_quad_clean.evt
Size (bytes)217,656,00058,852,800
Size207.6 MB 56.1 MB
Events in quadrant A1,523,823388,999
Events in quadrant B1,699,499398,504
Events in quadrant C1,490,739391,327
Events in quadrant D1,655,984373,699

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0672256
B0717478
C0670665
D07217103

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0684
B0680
C0682
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3239652.006792%
B3232571.763614%
C3236521.606922%
D3220762.360248%

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 4011 3266 0 0 0.00% 0.00%
B 4011 3262 0 0 0.00% 0.00%
C 4011 3266 0 0 0.00% 0.00%
D 4011 3265 21 21 0.52% 0.64%

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 8 5 9286 108.5 392 381 82.1
A 0 226 3718 40.66 392 381 82.1
A 13 248 3631 39.6 392 381 82.1
B 0 214 47612 617.19 391 382 76.5
B 0 219 39655 513.21 391 382 76.5
B 0 187 24887 320.23 391 382 76.5
C 8 128 3516 35.21 378 378 89.1
C 1 3 3479 34.79 378 378 89.1
C 14 67 2930 28.63 378 378 89.1
D 1 52 126191 1228.49 372 364 102.4
D 7 71 32665 315.37 372 364 102.4
D 13 105 18146 173.61 372 364 102.4

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