ASTROSAT CZTI

Data Quality Report

Orbit 26805

Creation date: 2024-06-27T19:33:09.142192
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/AS1A09_079T01_9000003864_26805cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26805cztM0_level2_quad_clean.evt
Size (bytes)489,173,760121,291,200
Size466.5 MB 115.7 MB
Events in quadrant A3,976,857795,778
Events in quadrant B3,547,527830,201
Events in quadrant C3,512,638811,366
Events in quadrant D3,349,469795,954

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161500
B0146380
C0143100
D0141130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6313340.538571%
B6312661.045627%
C63121181.869455%
D6312420.665399%

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 7558 6314 3 3 0.04% 0.05%
B 7557 6313 7 7 0.09% 0.11%
C 7557 6313 17 17 0.22% 0.27%
D 7557 6313 19 19 0.25% 0.30%

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 13 827098 5181.97 807 794 159.5
A 12 96 33466 204.89 807 794 159.5
A 13 254 10143 58.63 807 794 159.5
B 0 189 233092 1543.21 813 793 150.5
B 0 229 85879 565.24 813 793 150.5
B 10 246 17902 113.66 813 793 150.5
C 15 208 243909 1300.82 805 811 186.9
C 14 238 130938 696.31 805 811 186.9
C 13 61 5473 24.95 805 811 186.9
D 15 21 98017 511.11 805 787 190.2
D 1 52 74461 387.29 805 787 190.2
D 2 250 57492 298.08 805 787 190.2

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