ASTROSAT CZTI

Data Quality Report

Orbit 21922

Creation date: 2024-06-27T18:33:59.883254
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_100T03_9000003242_21922cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21922cztM0_level2_quad_clean.evt
Size (bytes)483,840,000132,701,760
Size461.4 MB 126.6 MB
Events in quadrant A3,410,290878,447
Events in quadrant B3,692,471892,540
Events in quadrant C3,451,561872,848
Events in quadrant D3,587,552852,212

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154192
B0159932
C0154062
D0161342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7523450.598166%
B75231031.369135%
C7523720.957065%
D7523630.837432%

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 8018 7523 0 0 0.00% 0.00%
B 8018 7523 15 15 0.19% 0.20%
C 8018 7523 0 0 0.00% 0.00%
D 8018 7523 17 17 0.21% 0.23%

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 4 2 43846 243.15 871 851 176.8
A 13 254 13533 71.72 871 851 176.8
A 3 137 7485 37.52 871 851 176.8
B 3 64 116477 692.49 871 848 167.0
B 0 197 71657 424.07 871 848 167.0
B 0 230 49364 290.56 871 848 167.0
C 14 238 132359 672.34 842 848 195.6
C 10 22 18458 90.03 842 848 195.6
C 8 128 12994 62.1 842 848 195.6
D 1 52 254898 1246.01 847 821 203.9
D 2 234 32008 152.94 847 821 203.9
D 12 235 30977 147.89 847 821 203.9

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