ASTROSAT CZTI

Data Quality Report

Orbit 35155

Creation date: 2022-03-30T13:31:55.374864
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_069T05_9000005038_35155cztM0_level2.evt modeM0/AS1A11_069T05_9000005038_35155cztM0_level2_quad_clean.evt
Size (bytes)395,032,32045,066,240
Size376.7 MB 43.0 MB
Events in quadrant A1,938,042293,697
Events in quadrant B3,843,384273,214
Events in quadrant C2,090,015289,982
Events in quadrant D3,858,425263,089

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078212
B0138061
C081361
D0138931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3446521.508996%
B344668119.762043%
C3446491.421938%
D34462998.676727%

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 5029 3447 28 28 0.56% 0.81%
B 5029 3447 406 406 8.07% 11.78%
C 5029 3447 37 37 0.74% 1.07%
D 5029 3447 235 235 4.67% 6.82%

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 15 237 156459 1795.53 422 415 86.9
A 10 83 56443 644.69 422 415 86.9
A 9 143 40006 455.56 422 415 86.9
B 5 236 2016882 26276.24 391 381 76.7
B 5 172 177755 2311.29 391 381 76.7
B 5 200 42387 547.36 391 381 76.7
C 15 214 147431 1534.14 408 411 95.8
C 0 10 100708 1046.59 408 411 95.8
C 0 207 97829 1016.55 408 411 95.8
D 8 195 1413494 13984.48 403 391 101.0
D 12 233 239674 2368.02 403 391 101.0
D 2 250 165895 1637.88 403 391 101.0

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