ASTROSAT CZTI

Data Quality Report

Orbit 31340

Creation date: 2024-06-27T20:26:59.217565
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/AS1A10_053T31_9000004540_31340cztM0_level2.evt modeM0/AS1A10_053T31_9000004540_31340cztM0_level2_quad_clean.evt
Size (bytes)461,589,12059,054,400
Size440.2 MB 56.3 MB
Events in quadrant A2,739,103367,455
Events in quadrant B4,312,104360,374
Events in quadrant C3,286,922344,427
Events in quadrant D3,285,235347,810

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110331
B0163333
C0130611
D0131991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52521152.189642%
B52511873.561226%
C52512995.694153%
D5251991.885355%

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 6417 5253 0 0 0.00% 0.00%
B 6416 5252 4 4 0.06% 0.08%
C 6416 5252 18 18 0.28% 0.34%
D 6416 5252 1 1 0.02% 0.02%

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 9897 64.56 709 694 142.6
A 3 137 6727 42.32 709 694 142.6
A 0 226 6250 38.97 709 694 142.6
B 6 159 1388296 10405.11 688 673 133.4
B 0 190 144665 1079.73 688 673 133.4
B 15 33 25754 188.07 688 673 133.4
C 3 233 367309 2381.3 660 666 154.0
C 14 238 148798 962.1 660 666 154.0
C 0 10 116873 754.75 660 666 154.0
D 8 195 644325 3954.22 689 672 162.8
D 2 234 22670 135.14 689 672 162.8
D 12 233 16581 97.74 689 672 162.8

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