ASTROSAT CZTI

Data Quality Report

Orbit 23194

Creation date: 2024-06-27T18:51:08.490151
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/AS1T03_175T01_9000003428_23194cztM0_level2.evt modeM0/AS1T03_175T01_9000003428_23194cztM0_level2_quad_clean.evt
Size (bytes)517,893,120109,546,560
Size493.9 MB 104.5 MB
Events in quadrant A3,682,036699,659
Events in quadrant B3,745,972714,595
Events in quadrant C3,877,267690,648
Events in quadrant D3,850,621671,622

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162822
B0163763
C0166922
D0170562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77841421.824255%
B77832172.788128%
C77832523.237826%
D77832032.608249%

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 8279 7786 0 0 0.00% 0.00%
B 8278 7785 0 0 0.00% 0.00%
C 8278 7785 2 2 0.02% 0.03%
D 8278 7785 44 44 0.53% 0.57%

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 11082 52.47 953 932 193.5
A 3 137 8881 41.09 953 932 193.5
A 0 226 8225 37.7 953 932 193.5
B 12 111 23625 121.61 951 924 186.7
B 11 111 20734 106.12 951 924 186.7
B 14 111 18721 95.34 951 924 186.7
C 14 238 142248 654.7 915 921 215.9
C 7 247 95198 436.74 915 921 215.9
C 0 10 56775 258.75 915 921 215.9
D 13 153 114282 502.5 914 887 225.7
D 12 2 95228 418.06 914 887 225.7
D 1 52 86423 379.04 914 887 225.7

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