ASTROSAT CZTI

Data Quality Report

Orbit 45156

Creation date: 2024-06-27T23:10:01.597664
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_049T04_9000006048_45156cztM0_level2.fits modeM0/AS1A13_049T04_9000006048_45156cztM0_level2_quad_clean.evt
Size (bytes)655,862,40096,347,520
Size625.5 MB 91.9 MB
Events in quadrant A12,045,466370,465
Events in quadrant B3,322,045758,936
Events in quadrant C2,997,500735,815
Events in quadrant D5,427,823616,218

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400925
B0138631
C0130231
D0202701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6249345255.240839%
B6250791.264000%
C6250420.672000%
D625066510.640000%

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 7398 6248 2981 2981 40.29% 47.71%
B 7400 6251 21 21 0.28% 0.34%
C 7400 6251 3 3 0.04% 0.05%
D 7400 6251 506 506 6.84% 8.09%

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 15 223 7884825 68984.02 556 544 114.3
A 10 83 1858035 16252.24 556 544 114.3
A 15 174 100224 872.16 556 544 114.3
B 12 16 128164 893.56 736 713 142.6
B 5 172 90135 626.94 736 713 142.6
B 4 170 76313 530.03 736 713 142.6
C 14 254 59501 342.37 738 744 171.6
C 12 2 20449 114.82 738 744 171.6
C 11 16 17683 98.7 738 744 171.6
D 5 235 1463576 8224.75 710 690 177.9
D 11 241 350832 1968.59 710 690 177.9
D 13 249 284706 1596.82 710 690 177.9

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