ASTROSAT CZTI

Data Quality Report

Orbit 23739

Creation date: 2024-06-27T18:58:10.083606
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/AS1A08_009T01_9000003516_23739cztM0_level2.evt modeM0/AS1A08_009T01_9000003516_23739cztM0_level2_quad_clean.evt
Size (bytes)288,872,64058,069,440
Size275.5 MB 55.4 MB
Events in quadrant A1,901,353371,085
Events in quadrant B2,097,401386,913
Events in quadrant C1,960,567370,771
Events in quadrant D2,521,452352,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081611
B086861
C082271
D0101191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3917160.408476%
B3917621.582844%
C3917551.404136%
D3917802.042379%

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 5277 3918 0 0 0.00% 0.00%
B 5277 3918 13 13 0.25% 0.33%
C 5277 3917 0 0 0.00% 0.00%
D 5277 3918 28 28 0.53% 0.71%

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 6519 60.54 493 484 99.7
A 3 137 4136 36.64 493 484 99.7
A 0 226 4110 36.37 493 484 99.7
B 3 64 100550 1084.66 494 481 92.3
B 0 189 31202 332.99 494 481 92.3
B 0 229 15513 162.93 494 481 92.3
C 14 238 77108 695.44 475 479 110.2
C 10 9 11211 97.4 475 479 110.2
C 10 91 7142 60.47 475 479 110.2
D 8 195 623117 5447.58 472 459 114.3
D 1 52 104251 908.07 472 459 114.3
D 2 234 16129 137.1 472 459 114.3

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