ASTROSAT CZTI

Data Quality Report

Orbit 31297

Creation date: 2024-06-27T20:26:18.222925
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/AS1T04_024T01_9000004530_31297cztM0_level2.evt modeM0/AS1T04_024T01_9000004530_31297cztM0_level2_quad_clean.evt
Size (bytes)245,180,16015,099,840
Size233.8 MB 14.4 MB
Events in quadrant A1,328,94974,632
Events in quadrant B1,984,92073,267
Events in quadrant C2,543,99664,780
Events in quadrant D1,400,71568,363

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052971
B074801
C093241
D056401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2433240.986436%
B2433532.178381%
C24332389.782162%
D2433120.493218%

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 2432 2432 0 0 0.00% 0.00%
B 2432 2432 5 5 0.21% 0.21%
C 2432 2432 73 73 3.00% 3.00%
D 2432 2432 1 1 0.04% 0.04%

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 4840 64.67 344 338 69.6
A 3 137 3222 41.43 344 338 69.6
A 0 226 2997 38.2 344 338 69.6
B 6 159 633199 9785.51 333 325 64.7
B 4 80 39145 600.24 333 325 64.7
B 12 111 7334 108.37 333 325 64.7
C 3 233 1212361 17117.08 304 307 70.8
C 0 10 68892 968.58 304 307 70.8
C 14 238 53475 750.86 304 307 70.8
D 8 195 114363 1396.5 328 321 81.7
D 12 233 17710 212.94 328 321 81.7
D 12 218 16866 202.6 328 321 81.7

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