ASTROSAT CZTI

Data Quality Report

Orbit 30904

Creation date: 2024-06-27T20:20:59.894795
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/AS1C06_004T01_9000004466_30904cztM0_level2.evt modeM0/AS1C06_004T01_9000004466_30904cztM0_level2_quad_clean.evt
Size (bytes)560,001,600122,319,360
Size534.1 MB 116.7 MB
Events in quadrant A3,212,010834,591
Events in quadrant B5,576,427847,374
Events in quadrant C3,688,413794,134
Events in quadrant D4,065,399798,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134492
B0205962
C0149392
D0161362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6162570.925024%
B61622093.391756%
C61625779.363843%
D61631322.141814%

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 8837 6163 4 4 0.05% 0.06%
B 8837 6163 18 18 0.20% 0.29%
C 8837 6163 32 32 0.36% 0.52%
D 8838 6164 57 57 0.64% 0.92%

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 13 49509 303.75 817 806 160.3
A 13 254 11538 66.93 817 806 160.3
A 3 137 7461 41.51 817 806 160.3
B 6 159 1822567 12092.49 819 802 150.7
B 6 36 289363 1915.41 819 802 150.7
B 0 190 144408 953.23 819 802 150.7
C 14 238 237214 1344.82 767 773 175.8
C 0 10 184343 1044.11 767 773 175.8
C 14 254 160184 906.7 767 773 175.8
D 8 195 622661 3361.27 789 770 185.0
D 1 52 156168 839.91 789 770 185.0
D 13 174 126916 681.81 789 770 185.0

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