ASTROSAT CZTI

Data Quality Report

Orbit 33990

Creation date: 2024-06-27T20:55:06.263444
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_046T07_9000004862_33990cztM0_level2.evt modeM0/AS1A11_046T07_9000004862_33990cztM0_level2_quad_clean.evt
Size (bytes)413,343,36036,619,200
Size394.2 MB 34.9 MB
Events in quadrant A1,856,323216,904
Events in quadrant B3,489,254212,213
Events in quadrant C3,152,753215,264
Events in quadrant D3,762,056195,665

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077011
B0127471
C0118071
D0137711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A379440.105430%
B379466717.580390%
C37942546.694781%
D37942466.483922%

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 3794 3794 0 0 0.00% 0.00%
B 3794 3794 566 566 14.92% 14.92%
C 3794 3794 218 218 5.75% 5.75%
D 3794 3794 229 229 6.04% 6.04%

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 8794 87.56 477 467 95.1
A 13 254 6751 66.08 477 467 95.1
A 13 6 6007 58.25 477 467 95.1
B 5 31 375842 4414.37 442 432 85.0
B 5 15 373601 4388.02 442 432 85.0
B 5 14 367857 4320.48 442 432 85.0
C 4 254 945226 8939.1 450 454 105.7
C 15 214 158065 1491.26 450 454 105.7
C 0 10 144567 1363.55 450 454 105.7
D 8 195 944125 8395.5 454 442 112.4
D 12 6 448184 3983.35 454 442 112.4
D 13 249 332860 2957.37 454 442 112.4

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