ASTROSAT CZTI

Data Quality Report

Orbit 20356

Creation date: 2024-06-27T18:14:20.781872
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/AS1A05_163T01_9000003010_20356cztM0_level2.evt modeM0/AS1A05_163T01_9000003010_20356cztM0_level2_quad_clean.evt
Size (bytes)594,953,28090,014,400
Size567.4 MB 85.8 MB
Events in quadrant A4,031,238546,880
Events in quadrant B4,140,776551,076
Events in quadrant C4,048,214536,384
Events in quadrant D5,233,553513,690

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173792
B0175713
C0173362
D0212272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83122913.500962%
B83123243.897979%
C83122883.464870%
D83125877.062079%

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 8817 8314 0 0 0.00% 0.00%
B 8817 8313 17 17 0.19% 0.20%
C 8817 8314 3 3 0.03% 0.04%
D 8817 8314 337 337 3.82% 4.05%

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 6 16 13068 56.66 1040 1013 212.7
A 10 17 12526 54.12 1040 1013 212.7
A 13 254 9686 40.77 1040 1013 212.7
B 3 64 66733 322.02 1028 997 204.1
B 12 111 25924 122.11 1028 997 204.1
B 11 111 23254 109.03 1028 997 204.1
C 14 238 153312 651.19 994 1000 233.9
C 7 220 17506 70.57 994 1000 233.9
C 13 61 6894 25.2 994 1000 233.9
D 1 52 1071938 4396.62 1000 969 243.6
D 7 238 382628 1566.81 1000 969 243.6
D 2 234 32651 130.06 1000 969 243.6

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