ASTROSAT CZTI

Data Quality Report

Orbit 03924

Creation date: 2024-06-27T14:35:17.615426
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/AS1G05_172T01_9000000502_03924cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03924cztM0_level2_quad_clean.evt
Size (bytes)438,033,60078,137,280
Size417.7 MB 74.5 MB
Events in quadrant A3,175,385478,132
Events in quadrant B3,302,776485,142
Events in quadrant C3,048,668480,389
Events in quadrant D3,288,759460,952

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138913
B0139342
C0136062
D0144222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66201151.737160%
B66201332.009063%
C6620981.480363%
D66201432.160121%

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 7705 6621 13 13 0.17% 0.20%
B 7705 6621 7 7 0.09% 0.11%
C 7705 6621 0 0 0.00% 0.00%
D 7705 6621 56 56 0.73% 0.85%

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 0 118 116890 721.13 787 769 161.0
A 0 226 18256 108.6 787 769 161.0
A 12 194 8213 46.23 787 769 161.0
B 15 204 104254 678.99 799 781 152.4
B 3 0 28913 184.6 799 781 152.4
B 0 229 23096 146.43 799 781 152.4
C 10 65 18439 99.03 771 774 178.4
C 12 4 11138 58.1 771 774 178.4
C 13 61 6455 31.85 771 774 178.4
D 4 160 145991 804.05 761 740 180.6
D 2 232 76159 417.49 761 740 180.6
D 13 239 51966 283.57 761 740 180.6

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
Veto Counter