ASTROSAT CZTI

Data Quality Report

Orbit 25398

Creation date: 2024-06-27T19:17:12.907808
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/AS1A09_057T04_9000003712_25398cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25398cztM0_level2_quad_clean.evt
Size (bytes)681,125,760109,457,280
Size649.6 MB 104.4 MB
Events in quadrant A4,538,428687,961
Events in quadrant B4,390,210697,634
Events in quadrant C4,460,354674,472
Events in quadrant D6,644,657645,166

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184880
B0184150
C0188200
D0257620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8780310.353075%
B8781480.546635%
C8781830.945223%
D87813013.427856%

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 10585 8782 0 0 0.00% 0.00%
B 10586 8782 2 2 0.02% 0.02%
C 10586 8782 0 0 0.00% 0.00%
D 10586 8781 224 224 2.12% 2.55%

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 6 16 273541 1241.78 1095 1070 219.4
A 15 173 39159 173.59 1095 1070 219.4
A 13 254 13080 54.74 1095 1070 219.4
B 0 190 68440 323.54 1087 1056 208.3
B 12 111 25767 118.65 1087 1056 208.3
B 0 229 23501 107.77 1087 1056 208.3
C 14 238 168514 674.45 1055 1059 248.3
C 7 87 141478 565.56 1055 1059 248.3
C 7 247 25209 97.27 1055 1059 248.3
D 1 52 1338135 5229.46 1052 1024 255.7
D 8 195 704364 2750.77 1052 1024 255.7
D 7 238 495156 1932.56 1052 1024 255.7

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