ASTROSAT CZTI

Data Quality Report

Orbit 27702

Creation date: 2024-06-27T19:43:18.414869
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_262T01_9000003988_27702cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27702cztM0_level2_quad_clean.evt
Size (bytes)468,365,760111,352,320
Size446.7 MB 106.2 MB
Events in quadrant A3,257,804748,920
Events in quadrant B3,319,481750,695
Events in quadrant C3,395,162720,292
Events in quadrant D3,769,569698,244

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140630
B0141980
C0143140
D0155260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6516851.304481%
B6516771.181707%
C65161121.718846%
D65161392.133211%

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 7636 6516 1 1 0.01% 0.02%
B 7636 6516 3 3 0.04% 0.05%
C 7636 6516 0 0 0.00% 0.00%
D 7636 6516 76 76 1.00% 1.17%

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 8 192 13152 73.25 841 823 168.3
A 13 254 10019 54.64 841 823 168.3
A 3 137 7821 41.58 841 823 168.3
B 0 190 35955 225.67 827 805 155.8
B 0 230 21380 132.09 827 805 155.8
B 12 111 18551 113.93 827 805 155.8
C 14 238 128635 676.88 807 813 188.8
C 3 233 78228 409.95 807 813 188.8
C 8 208 23065 117.83 807 813 188.8
D 1 52 306843 1591.03 813 792 192.4
D 11 176 235518 1220.24 813 792 192.4
D 2 250 59920 307.38 813 792 192.4

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