ASTROSAT CZTI

Data Quality Report

Orbit 29620

Creation date: 2024-06-27T20:06:07.968149
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_286T01_9000004268_29620cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29620cztM0_level2_quad_clean.evt
Size (bytes)458,282,880100,149,120
Size437.1 MB 95.5 MB
Events in quadrant A3,231,346638,539
Events in quadrant B3,321,931652,684
Events in quadrant C3,343,555630,095
Events in quadrant D3,497,716615,525

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145621
B0146512
C0147281
D0152341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71241632.288040%
B71241992.793375%
C71242052.877597%
D71241161.628299%

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 7279 7125 0 0 0.00% 0.00%
B 7279 7125 0 0 0.00% 0.00%
C 7279 7126 7 7 0.10% 0.10%
D 7279 7126 16 16 0.22% 0.22%

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 11114 60.57 836 815 170.0
A 3 137 8792 46.91 836 815 170.0
A 0 226 6973 36.22 836 815 170.0
B 0 190 23423 140.27 836 810 161.2
B 12 111 20375 121.36 836 810 161.2
B 11 111 18511 109.8 836 810 161.2
C 14 238 130697 689.79 806 808 188.3
C 10 22 50743 265.18 806 808 188.3
C 2 114 16225 81.87 806 808 188.3
D 8 195 216562 1104.48 811 787 195.4
D 2 250 117398 596.89 811 787 195.4
D 13 153 63156 319.25 811 787 195.4

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