ASTROSAT CZTI

Data Quality Report

Orbit 14420

Creation date: 2024-06-27T16:54:55.350622
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/AS1A04_201T03_9000002128_14420cztM0_level2.evt modeM0/AS1A04_201T03_9000002128_14420cztM0_level2_quad_clean.evt
Size (bytes)545,952,96086,636,160
Size520.7 MB 82.6 MB
Events in quadrant A3,641,348535,877
Events in quadrant B4,181,318533,129
Events in quadrant C4,449,561523,528
Events in quadrant D3,755,482511,748

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015682118
B017287115
C018218125
D016287109

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01511
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74672803.749833%
B74663865.170104%
C74662403.214573%
D74672433.254319%

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 7760 7472 0 0 0.00% 0.00%
B 7760 7472 76 76 0.98% 1.02%
C 7760 7470 3 3 0.04% 0.04%
D 7760 7475 9 9 0.12% 0.12%

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 12 189 58685 309.5 918 896 186.7
A 8 15 42201 221.21 918 896 186.7
A 0 226 8738 42.0 918 896 186.7
B 0 182 351918 2010.3 911 885 174.6
B 0 189 88761 503.25 911 885 174.6
B 0 229 67516 381.58 911 885 174.6
C 3 233 962433 4698.15 889 894 204.7
C 10 22 7717 33.34 889 894 204.7
C 13 61 6320 26.51 889 894 204.7
D 2 120 148055 660.25 889 863 222.9
D 10 199 99339 441.73 889 863 222.9
D 2 234 28731 125.01 889 863 222.9

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