ASTROSAT CZTI

Data Quality Report

Orbit 31057

Creation date: 2024-06-27T20:22:51.110772
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/AS1C06_002T01_9000004490_31057cztM0_level2.evt modeM0/AS1C06_002T01_9000004490_31057cztM0_level2_quad_clean.evt
Size (bytes)1,528,211,520162,187,200
Size1.4 GB 154.7 MB
Events in quadrant A5,841,8561,194,946
Events in quadrant B9,795,1641,181,077
Events in quadrant C6,112,1461,145,674
Events in quadrant D23,671,657503,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257562
B0388202
C0261042
D0791742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12777920.720044%
B127782011.573016%
C127781531.197370%
D12778823764.462357%

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 14042 12779 0 0 0.00% 0.00%
B 14043 12780 8 8 0.06% 0.06%
C 14043 12780 8 8 0.06% 0.06%
D 14043 12780 6760 6760 48.14% 52.90%

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 22955 70.93 1512 1478 302.8
A 3 137 15551 46.48 1512 1478 302.8
A 0 226 12841 37.53 1512 1478 302.8
B 6 159 3505265 12296.92 1493 1455 284.9
B 0 190 119770 415.24 1493 1455 284.9
B 5 172 72839 250.53 1493 1455 284.9
C 14 238 232489 691.28 1440 1447 334.2
C 0 10 71792 210.47 1440 1447 334.2
C 1 16 68083 199.38 1440 1447 334.2
D 13 174 18588403 95042.11 819 795 195.6
D 8 195 1670306 8536.54 819 795 195.6
D 12 218 169830 864.31 819 795 195.6

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