ASTROSAT CZTI

Data Quality Report

Orbit 21830

Creation date: 2024-06-27T18:32:46.594679
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_004T01_9000003230_21830cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21830cztM0_level2_quad_clean.evt
Size (bytes)496,987,20076,639,680
Size474.0 MB 73.1 MB
Events in quadrant A3,277,547464,499
Events in quadrant B3,501,096476,608
Events in quadrant C3,334,402459,573
Events in quadrant D4,466,477435,756

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141742
B0146322
C0141792
D0179412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6953100.143823%
B6953420.604056%
C6953430.618438%
D69531612.315547%

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 7903 6954 0 0 0.00% 0.00%
B 7903 6954 12 12 0.15% 0.17%
C 7903 6954 0 0 0.00% 0.00%
D 7903 6954 149 149 1.89% 2.14%

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 13206 71.93 849 831 172.0
A 0 226 7428 38.34 849 831 172.0
A 3 137 6989 35.79 849 831 172.0
B 3 64 56465 334.37 858 836 166.4
B 0 197 22014 127.29 858 836 166.4
B 12 111 19131 109.97 858 836 166.4
C 14 238 129600 668.01 821 825 192.8
C 13 61 5660 25.08 821 825 192.8
C 3 248 2696 9.7 821 825 192.8
D 1 52 625581 3123.09 820 797 200.1
D 13 223 437848 2184.68 820 797 200.1
D 12 33 120355 597.63 820 797 200.1

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