ASTROSAT CZTI

Data Quality Report

Orbit 04737

Creation date: 2024-06-27T14:46:14.979144
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_192T01_9000000594_04737cztM0_level2.evt modeM0/AS1G05_192T01_9000000594_04737cztM0_level2_quad_clean.evt
Size (bytes)798,338,88089,769,600
Size761.4 MB 85.6 MB
Events in quadrant A3,614,659564,731
Events in quadrant B3,892,740573,189
Events in quadrant C8,093,884526,172
Events in quadrant D8,039,514501,277

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165814
B0170253
C0294843
D0295663

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79402032.556675%
B79402473.110831%
C7940124615.692695%
D7940148918.753149%

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 8675 7945 7 7 0.08% 0.09%
B 8675 7945 1 1 0.01% 0.01%
C 8675 7944 891 891 10.27% 11.22%
D 8675 7945 1079 1079 12.44% 13.58%

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 30105 155.84 918 895 187.4
A 0 50 23327 119.68 918 895 187.4
A 15 254 13580 67.68 918 895 187.4
B 14 167 242544 1336.84 933 906 180.8
B 4 80 29934 160.59 933 906 180.8
B 12 111 17271 90.54 933 906 180.8
C 14 48 4772652 24239.22 847 850 196.9
C 14 67 8562 39.17 847 850 196.9
C 13 61 6947 30.97 847 850 196.9
D 1 31 2193188 11187.62 818 794 196.0
D 13 53 1800793 9185.26 818 794 196.0
D 2 234 450695 2295.81 818 794 196.0

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