ASTROSAT CZTI

Data Quality Report

Orbit 22809

Creation date: 2024-06-27T18:46:03.166128
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/AS1A07_054T01_9000003370_22809cztM0_level2.evt modeM0/AS1A07_054T01_9000003370_22809cztM0_level2_quad_clean.evt
Size (bytes)511,174,080131,935,680
Size487.5 MB 125.8 MB
Events in quadrant A3,105,375914,528
Events in quadrant B3,252,863920,073
Events in quadrant C3,112,999868,065
Events in quadrant D5,558,988830,385

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135322
B0139172
C0136112
D0211922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6644160.240819%
B6644320.481638%
C6644490.737508%
D66434847.285865%

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 7774 6645 0 0 0.00% 0.00%
B 7774 6645 4 4 0.05% 0.06%
C 7774 6645 1 1 0.01% 0.02%
D 7773 6644 362 362 4.66% 5.45%

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 12149 70.7 805 790 160.7
A 0 226 6941 38.28 805 790 160.7
A 3 137 6441 35.17 805 790 160.7
B 0 229 49214 319.29 801 782 151.7
B 3 64 22877 145.66 801 782 151.7
B 4 173 19295 122.05 801 782 151.7
C 14 238 122420 690.21 763 767 176.3
C 3 233 6176 30.69 763 767 176.3
C 13 61 5332 25.9 763 767 176.3
D 1 52 2531798 13966.95 754 731 181.2
D 2 152 94469 517.27 754 731 181.2
D 9 85 39668 214.86 754 731 181.2

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