ASTROSAT CZTI

Data Quality Report

Orbit 24381

Creation date: 2024-06-27T19:05:24.410332
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/AS1A08_008T01_9000003596_24381cztM0_level2.evt modeM0/AS1A08_008T01_9000003596_24381cztM0_level2_quad_clean.evt
Size (bytes)522,538,560111,939,840
Size498.3 MB 106.8 MB
Events in quadrant A3,154,607737,375
Events in quadrant B3,210,452754,591
Events in quadrant C5,007,217709,681
Events in quadrant D3,984,583707,533

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140101
B0140731
C0201812
D0162211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69111011.461438%
B69111121.620605%
C69102703.907381%
D69101041.505065%

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 7241 6912 0 0 0.00% 0.00%
B 7241 6912 0 0 0.00% 0.00%
C 7240 6911 60 60 0.83% 0.87%
D 7240 6911 17 17 0.23% 0.25%

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 10594 59.26 818 798 165.3
A 3 137 7529 40.72 818 798 165.3
A 0 226 7004 37.54 818 798 165.3
B 12 111 19209 117.57 814 791 156.7
B 11 111 17391 105.97 814 791 156.7
B 14 111 15285 92.52 814 791 156.7
C 7 247 1595385 8769.7 783 786 181.8
C 2 16 213251 1168.48 783 786 181.8
C 14 238 125848 687.79 783 786 181.8
D 8 195 583129 3006.73 801 775 193.7
D 12 233 247769 1275.24 801 775 193.7
D 1 52 78435 400.96 801 775 193.7

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