ASTROSAT CZTI

Data Quality Report

Orbit 24696

Creation date: 2024-06-27T19:08:52.473425
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/AS1T03_191T01_9000003618_24696cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24696cztM0_level2_quad_clean.evt
Size (bytes)507,352,320130,754,880
Size483.8 MB 124.7 MB
Events in quadrant A3,099,640908,531
Events in quadrant B3,266,695904,715
Events in quadrant C3,644,042852,427
Events in quadrant D4,917,922845,225

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132721
B0137171
C0148091
D0189901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6441530.822854%
B6442941.459174%
C6442931.443651%
D64421171.816206%

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 7456 6441 0 0 0.00% 0.00%
B 7457 6443 11 11 0.15% 0.17%
C 7457 6443 0 0 0.00% 0.00%
D 7457 6443 35 35 0.47% 0.54%

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 11456 67.21 802 786 158.8
A 0 226 7090 39.71 802 786 158.8
A 3 137 6980 39.01 802 786 158.8
B 4 80 135579 908.78 788 772 148.3
B 0 190 25223 164.83 788 772 148.3
B 12 111 17514 112.86 788 772 148.3
C 7 247 551121 3188.85 749 754 172.6
C 14 238 123503 711.21 749 754 172.6
C 2 16 22785 127.65 749 754 172.6
D 8 195 1564416 8496.86 769 746 184.0
D 1 52 218159 1181.4 769 746 184.0
D 7 238 162853 880.87 769 746 184.0

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