ASTROSAT CZTI

Data Quality Report

Orbit 28470

Creation date: 2024-06-27T19:52:04.102912
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_101T21_9000004090_28470cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28470cztM0_level2_quad_clean.evt
Size (bytes)620,913,600129,781,440
Size592.1 MB 123.8 MB
Events in quadrant A4,704,894860,256
Events in quadrant B3,369,081924,150
Events in quadrant C3,228,006892,088
Events in quadrant D7,075,989814,234

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180510
B0140080
C0134180
D0253130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A629666610.578145%
B6296761.207116%
C6296781.238882%
D6296118318.789708%

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 7486 6296 599 599 8.00% 9.51%
B 7486 6296 19 19 0.25% 0.30%
C 7486 6296 0 0 0.00% 0.00%
D 7486 6296 1178 1178 15.74% 18.71%

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 15 174 1740473 11491.69 764 749 151.4
A 15 169 11059 68.1 764 749 151.4
A 13 254 8646 52.16 764 749 151.4
B 10 245 222447 1515.03 791 773 146.3
B 0 230 24689 163.45 791 773 146.3
B 12 111 17636 115.25 791 773 146.3
C 14 238 126166 698.69 777 782 179.5
C 7 247 55876 307.01 777 782 179.5
C 3 233 18053 96.24 777 782 179.5
D 1 52 2384543 13468.63 750 729 177.0
D 8 195 1567434 8851.94 750 729 177.0
D 2 250 212664 1197.44 750 729 177.0

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