ASTROSAT CZTI

Data Quality Report

Orbit 03438

Creation date: 2024-06-27T14:29:00.927533
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/AS1G05_167T01_9000000456_03438cztM0_level2.evt modeM0/AS1G05_167T01_9000000456_03438cztM0_level2_quad_clean.evt
Size (bytes)781,263,360130,472,640
Size745.1 MB 124.4 MB
Events in quadrant A5,825,126783,473
Events in quadrant B6,135,661788,805
Events in quadrant C5,657,444789,902
Events in quadrant D5,230,980761,089

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252643
B0254532
C0251922
D0245972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119761451.210755%
B119761120.935204%
C11976670.559452%
D119761010.843353%

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 13151 11979 16 16 0.12% 0.13%
B 13151 11979 2 2 0.02% 0.02%
C 13151 11979 8 8 0.06% 0.07%
D 13151 11979 13 13 0.10% 0.11%

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 8 15 210748 735.68 1383 1355 284.6
A 0 118 96116 332.93 1383 1355 284.6
A 0 50 93333 323.15 1383 1355 284.6
B 15 204 546044 2003.96 1400 1370 271.8
B 14 167 88229 319.57 1400 1370 271.8
B 0 228 23993 83.23 1400 1370 271.8
C 1 192 311192 993.32 1340 1345 311.9
C 15 208 84893 267.84 1340 1345 311.9
C 12 4 13113 37.73 1340 1345 311.9
D 14 34 39608 117.69 1337 1296 325.5
D 9 85 37471 111.12 1337 1296 325.5
D 13 223 27402 80.19 1337 1296 325.5

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