ASTROSAT CZTI

Data Quality Report

Orbit 17720

Creation date: 2024-06-27T17:40:01.233036
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_042T01_9000002630_17720cztM0_level2.evt modeM0/AS1T03_042T01_9000002630_17720cztM0_level2_quad_clean.evt
Size (bytes)518,731,20086,978,880
Size494.7 MB 82.9 MB
Events in quadrant A3,043,600554,984
Events in quadrant B3,212,113571,577
Events in quadrant C3,141,374542,722
Events in quadrant D5,863,979503,898

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135461
B0139461
C0136291
D0220631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66091311.982146%
B66081612.436441%
C66081582.391041%
D6608110416.707022%

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 6949 6610 0 0 0.00% 0.00%
B 6948 6610 13 13 0.19% 0.20%
C 6948 6610 0 0 0.00% 0.00%
D 6948 6610 872 872 12.55% 13.19%

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 15 174 14179 83.44 786 769 160.7
A 0 226 6848 37.82 786 769 160.7
A 3 137 5836 31.53 786 769 160.7
B 0 182 72918 480.19 782 762 150.3
B 0 189 35953 234.19 782 762 150.3
B 12 111 18103 115.4 782 762 150.3
C 14 238 115591 655.89 749 754 175.1
C 3 233 84242 476.84 749 754 175.1
C 5 218 17694 96.75 749 754 175.1
D 7 238 2905845 15317.15 698 682 189.7
D 13 232 162624 853.82 698 682 189.7
D 1 52 64132 334.53 698 682 189.7

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