ASTROSAT CZTI

Data Quality Report

Orbit 37942

Creation date: 2024-06-27T21:46:26.377262
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/AS1A11_082T01_9000005356_37942cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37942cztM0_level2_quad_clean.evt
Size (bytes)420,298,56097,122,240
Size400.8 MB 92.6 MB
Events in quadrant A2,607,681655,923
Events in quadrant B2,731,180668,071
Events in quadrant C2,586,987675,112
Events in quadrant D4,473,476601,848

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106013
B0110882
C0105392
D0165002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A484770.144419%
B4847881.815556%
C4847230.474520%
D484848810.066007%

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 6999 4848 4 4 0.06% 0.08%
B 6999 4848 63 63 0.90% 1.30%
C 6999 4848 15 15 0.21% 0.31%
D 7000 4849 451 451 6.44% 9.30%

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 10 83 347788 3035.07 576 567 114.4
A 12 189 13487 112.93 576 567 114.4
A 13 6 10311 85.17 576 567 114.4
B 5 172 357350 3320.98 568 554 107.4
B 4 81 61311 565.51 568 554 107.4
B 0 230 52654 484.94 568 554 107.4
C 15 214 210199 1638.52 560 565 127.9
C 0 10 138389 1077.25 560 565 127.9
C 14 254 45505 351.26 560 565 127.9
D 1 52 1078790 8163.43 541 524 132.1
D 12 233 1042155 7886.07 541 524 132.1
D 10 118 88579 666.65 541 524 132.1

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