ASTROSAT CZTI

Data Quality Report

Orbit 22358

Creation date: 2024-06-27T18:39:46.364450
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/AS1A07_007T04_9000003310_22358cztM0_level2.evt modeM0/AS1A07_007T04_9000003310_22358cztM0_level2_quad_clean.evt
Size (bytes)301,780,80056,761,920
Size287.8 MB 54.1 MB
Events in quadrant A2,094,060356,962
Events in quadrant B2,172,321358,649
Events in quadrant C2,143,805348,763
Events in quadrant D2,421,808337,470

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093001
B094361
C093161
D0103371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4503410.910504%
B4503450.999334%
C4503661.465690%
D4502871.932474%

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 5468 4503 0 0 0.00% 0.00%
B 5468 4503 1 1 0.02% 0.02%
C 5468 4503 0 0 0.00% 0.00%
D 5467 4502 37 37 0.68% 0.82%

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 13 254 5920 48.99 542 529 110.0
A 3 137 4749 38.35 542 529 110.0
A 0 226 4615 37.13 542 529 110.0
B 0 190 23010 212.73 542 528 105.7
B 0 229 14316 130.47 542 528 105.7
B 12 111 12509 113.37 542 528 105.7
C 14 238 83668 670.29 527 530 124.0
C 0 10 4423 31.39 527 530 124.0
C 13 61 3663 25.26 527 530 124.0
D 1 52 306801 2350.53 530 514 130.3
D 12 227 71945 548.18 530 514 130.3
D 2 234 18707 139.62 530 514 130.3

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