ASTROSAT CZTI

Data Quality Report

Orbit 15747

Creation date: 2024-06-27T17:12:57.908875
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/AS1T02_088T01_9000002332_15747cztM0_level2.evt modeM0/AS1T02_088T01_9000002332_15747cztM0_level2_quad_clean.evt
Size (bytes)241,453,44052,090,560
Size230.3 MB 49.7 MB
Events in quadrant A1,711,782338,875
Events in quadrant B1,887,816348,407
Events in quadrant C1,802,379333,039
Events in quadrant D1,682,438320,384

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069782
B075521
C072941
D070111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3333130.390039%
B3333351.050105%
C3333371.110111%
D3333120.360036%

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 4614 3335 0 0 0.00% 0.00%
B 4614 3335 2 2 0.04% 0.06%
C 4614 3335 0 0 0.00% 0.00%
D 4614 3335 1 1 0.02% 0.03%

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 0 226 4012 40.08 442 434 89.3
A 12 194 3283 31.91 442 434 89.3
A 3 1 3161 30.55 442 434 89.3
B 4 251 58849 672.06 446 436 86.9
B 3 209 21995 248.04 446 436 86.9
B 5 236 14023 156.32 446 436 86.9
C 14 238 65549 652.04 426 430 99.9
C 3 233 64720 643.74 426 430 99.9
C 7 247 10190 97.73 426 430 99.9
D 1 52 37200 346.31 428 414 106.2
D 2 234 13319 121.49 428 414 106.2
D 5 51 9426 84.84 428 414 106.2

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