ASTROSAT CZTI

Data Quality Report

Orbit 11640

Creation date: 2024-06-27T16:16:18.013218
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_026T04_9000001714_11640cztM0_level2.evt modeM0/AS1A04_026T04_9000001714_11640cztM0_level2_quad_clean.evt
Size (bytes)295,960,32067,152,960
Size282.2 MB 64.0 MB
Events in quadrant A2,348,874456,042
Events in quadrant B2,136,023462,239
Events in quadrant C1,643,251448,514
Events in quadrant D2,587,415409,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095102
B087231
C074391
D0102341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36251734.772414%
B36251885.186207%
C3625551.517241%
D36252857.862069%

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 4231 3627 13 13 0.31% 0.36%
B 4231 3627 45 45 1.06% 1.24%
C 4231 3627 1 1 0.02% 0.03%
D 4231 3627 174 174 4.11% 4.80%

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 1 162 189610 2120.39 435 424 89.2
A 8 5 136926 1529.91 435 424 89.2
A 1 178 111905 1249.48 435 424 89.2
B 4 239 334800 3959.02 434 421 84.5
B 0 219 41491 486.27 434 421 84.5
B 15 204 25757 299.98 434 421 84.5
C 12 4 4438 40.89 418 418 98.3
C 8 128 3338 29.7 418 418 98.3
C 13 61 3157 27.86 418 418 98.3
D 1 52 767465 8119.23 391 378 94.5
D 8 195 91468 964.14 391 378 94.5
D 5 222 76799 808.88 391 378 94.5

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