ASTROSAT CZTI

Data Quality Report

Orbit 24389

Creation date: 2024-06-27T19:05:28.552459
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/AS1A08_008T01_9000003596_24389cztM0_level2.evt modeM0/AS1A08_008T01_9000003596_24389cztM0_level2_quad_clean.evt
Size (bytes)813,787,200100,177,920
Size776.1 MB 95.5 MB
Events in quadrant A3,068,460741,613
Events in quadrant B3,150,298762,679
Events in quadrant C13,902,261423,816
Events in quadrant D4,108,966674,906

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129512
B0131282
C0454532
D0162492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6144250.406901%
B6144330.537109%
C6144533386.800130%
D61442664.329427%

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 7444 6145 0 0 0.00% 0.00%
B 7444 6145 0 0 0.00% 0.00%
C 7444 6145 4894 4894 65.74% 79.64%
D 7444 6145 232 232 3.12% 3.78%

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 10573 61.2 796 780 160.0
A 0 226 6896 38.22 796 780 160.0
A 3 137 6861 38.0 796 780 160.0
B 0 230 19490 126.24 797 779 148.2
B 12 111 17151 110.46 797 779 148.2
B 11 111 15322 98.12 797 779 148.2
C 7 247 11805391 103149.36 504 507 114.4
C 14 238 78296 679.71 504 507 114.4
C 7 226 31073 267.08 504 507 114.4
D 1 52 993059 5630.69 741 721 176.2
D 12 233 244186 1381.46 741 721 176.2
D 2 234 27929 154.38 741 721 176.2

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