ASTROSAT CZTI

Data Quality Report

Orbit 17734

Creation date: 2024-06-27T17:40:10.680537
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_17734cztM0_level2.evt modeM0/AS1T03_042T01_9000002630_17734cztM0_level2_quad_clean.evt
Size (bytes)452,756,16097,413,120
Size431.8 MB 92.9 MB
Events in quadrant A3,308,871618,559
Events in quadrant B3,310,660635,474
Events in quadrant C3,316,215606,775
Events in quadrant D3,296,226597,957

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146831
B0145421
C0145351
D0148391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7059931.317467%
B7060991.402266%
C7060921.303116%
D7060510.722380%

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 7664 7060 7 7 0.09% 0.10%
B 7665 7060 1 1 0.01% 0.01%
C 7665 7060 1 1 0.01% 0.01%
D 7665 7061 9 9 0.12% 0.13%

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 80266 465.59 836 817 170.6
A 4 2 14839 82.17 836 817 170.6
A 0 226 7199 37.4 836 817 170.6
B 10 245 25370 150.9 837 817 162.7
B 12 111 19343 113.86 837 817 162.7
B 11 111 17091 100.02 837 817 162.7
C 14 238 124025 658.8 797 804 187.0
C 0 207 33677 175.75 797 804 187.0
C 1 16 19856 101.86 797 804 187.0
D 1 52 146805 700.72 805 782 208.4
D 7 238 34987 164.14 805 782 208.4
D 2 234 26027 121.14 805 782 208.4

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