ASTROSAT CZTI

Data Quality Report

Orbit 23857

Creation date: 2024-06-27T18:59:28.153282
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_149T01_9000003534_23857cztM0_level2.evt modeM0/AS1A07_149T01_9000003534_23857cztM0_level2_quad_clean.evt
Size (bytes)448,856,640103,953,600
Size428.1 MB 99.1 MB
Events in quadrant A3,129,356680,266
Events in quadrant B3,283,055692,895
Events in quadrant C3,468,458657,890
Events in quadrant D3,253,742646,688

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137592
B0140812
C0143072
D0142842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6749340.503778%
B6749470.696399%
C6749851.259446%
D6749300.444510%

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 7579 6750 0 0 0.00% 0.00%
B 7579 6750 8 8 0.11% 0.12%
C 7579 6750 0 0 0.00% 0.00%
D 7579 6750 11 11 0.15% 0.16%

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 11977 68.53 811 794 163.2
A 0 226 7090 38.58 811 794 163.2
A 3 137 7060 38.4 811 794 163.2
B 5 172 50047 323.67 811 792 152.2
B 7 202 19801 124.92 811 792 152.2
B 12 111 18077 113.59 811 792 152.2
C 7 247 319800 1775.33 772 775 179.7
C 14 238 123842 684.85 772 775 179.7
C 0 10 13551 71.1 772 775 179.7
D 8 195 142139 748.99 781 758 188.8
D 1 52 83259 437.06 781 758 188.8
D 2 234 27610 142.25 781 758 188.8

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