ASTROSAT CZTI

Data Quality Report

Orbit 34412

Creation date: 2022-02-08T06:26:44.358331
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/AS1A05_108T02_9000004914_34412cztM0_level2.evt modeM0/AS1A05_108T02_9000004914_34412cztM0_level2_quad_clean.evt
Size (bytes)479,522,88081,440,640
Size457.3 MB 77.7 MB
Events in quadrant A2,877,538513,341
Events in quadrant B3,463,613520,175
Events in quadrant C3,341,287513,654
Events in quadrant D4,416,570483,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126973
B0144892
C0137352
D0172862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6231100.160488%
B62311382.214733%
C6231300.481464%
D62312063.306050%

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 9337 6233 1 1 0.01% 0.02%
B 9337 6233 83 83 0.89% 1.33%
C 9337 6233 23 23 0.25% 0.37%
D 9337 6233 141 141 1.51% 2.26%

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 35409 237.64 725 709 146.0
A 9 143 23521 156.22 725 709 146.0
A 13 6 14739 96.08 725 709 146.0
B 5 172 510690 3726.44 718 700 136.9
B 5 255 51345 370.06 718 700 136.9
B 0 190 45441 326.92 718 700 136.9
C 15 214 261040 1575.6 712 718 165.2
C 14 67 142702 859.36 712 718 165.2
C 0 10 81422 488.46 712 718 165.2
D 8 195 700035 4080.39 699 678 171.4
D 2 249 334114 1945.43 699 678 171.4
D 1 47 275247 1601.97 699 678 171.4

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