ASTROSAT CZTI

Data Quality Report

Orbit 08302

Creation date: 2024-06-27T15:30:48.540498
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/AS1T01_163T01_9000001152_08302cztM0_level2.evt modeM0/AS1T01_163T01_9000001152_08302cztM0_level2_quad_clean.evt
Size (bytes)187,896,96048,885,120
Size179.2 MB 46.6 MB
Events in quadrant A1,297,670325,395
Events in quadrant B1,496,210326,624
Events in quadrant C1,262,696324,182
Events in quadrant D1,451,178313,759

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054981
B061881
C054271
D060101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2659260.977811%
B2659401.504325%
C2659110.413689%
D2659301.128244%

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 3369 2660 1 1 0.03% 0.04%
B 3369 2660 1 1 0.03% 0.04%
C 3369 2660 0 0 0.00% 0.00%
D 3369 2660 22 22 0.65% 0.83%

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 13 251 11387 156.13 332 324 70.9
A 13 14 3648 46.91 332 324 70.9
A 0 226 3231 41.03 332 324 70.9
B 0 214 103550 1547.78 331 323 66.7
B 0 219 60307 899.4 331 323 66.7
B 0 230 12811 187.24 331 323 66.7
C 13 61 2534 28.71 323 325 76.9
C 1 3 1120 10.33 323 325 76.9
C 3 202 770 5.78 323 325 76.9
D 8 230 89504 1028.4 322 314 86.7
D 13 105 88359 1015.2 322 314 86.7
D 2 14 30234 344.99 322 314 86.7

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