ASTROSAT CZTI

Data Quality Report

Orbit 34610

Creation date: 2022-02-21T14:55:54.121753
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/AS1C07_014T01_9000004950_34610cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34610cztM0_level2_quad_clean.evt
Size (bytes)248,598,72038,070,720
Size237.1 MB 36.3 MB
Events in quadrant A1,406,595252,881
Events in quadrant B2,020,753244,131
Events in quadrant C1,508,147247,166
Events in quadrant D2,419,903226,334

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055461
B075541
C059371
D089681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A252990.355872%
B25292158.501384%
C2529331.304864%
D2529381.502570%

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 2529 2529 2 2 0.08% 0.08%
B 2529 2529 154 154 6.09% 6.09%
C 2529 2529 19 19 0.75% 0.75%
D 2529 2529 38 38 1.50% 1.50%

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 21748 298.01 355 351 71.8
A 15 174 8578 114.58 355 351 71.8
A 13 254 4230 54.03 355 351 71.8
B 5 172 595995 9159.89 340 334 65.0
B 5 255 55395 846.71 340 334 65.0
B 10 245 14138 212.27 340 334 65.0
C 15 214 106976 1374.79 332 336 77.6
C 0 10 83829 1076.38 332 336 77.6
C 14 67 14626 184.23 332 336 77.6
D 8 195 843620 10292.3 332 325 81.9
D 7 223 94551 1150.02 332 325 81.9
D 12 235 60784 737.89 332 325 81.9

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