ASTROSAT CZTI

Data Quality Report

Orbit 39705

Creation date: 2024-06-27T22:07:58.215848
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/AS1A12_011T22_9000005492_39705cztM0_level2.fits modeM0/AS1A12_011T22_9000005492_39705cztM0_level2_quad_clean.evt
Size (bytes)328,668,48073,854,720
Size313.4 MB 70.4 MB
Events in quadrant A3,229,602509,361
Events in quadrant B2,044,194522,546
Events in quadrant C3,630,000476,033
Events in quadrant D2,928,259426,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126861
B088971
C0137631
D0114941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A42911082.516896%
B4291180.419483%
C42911804.194826%
D42913067.131205%

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 4291 4291 79 79 1.84% 1.84%
B 4291 4291 7 7 0.16% 0.16%
C 4291 4291 148 148 3.45% 3.45%
D 4291 4291 241 241 5.62% 5.62%

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 15 222 711037 7146.86 486 476 99.4
A 15 174 323327 3247.25 486 476 99.4
A 10 83 304780 3060.71 486 476 99.4
B 5 172 60088 631.52 488 475 94.4
B 0 186 20687 214.12 488 475 94.4
B 0 190 19995 206.79 488 475 94.4
C 9 187 1034931 9394.84 469 472 110.1
C 15 208 578536 5249.91 469 472 110.1
C 15 214 174691 1582.24 469 472 110.1
D 12 233 888110 7743.76 466 452 114.6
D 12 227 109643 952.56 466 452 114.6
D 2 249 41880 361.41 466 452 114.6

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