ASTROSAT CZTI

Data Quality Report

Orbit 12161

Creation date: 2024-06-27T16:23:13.622685
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/AS1G08_065T01_9000001796_12161cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12161cztM0_level2_quad_clean.evt
Size (bytes)563,650,560108,544,320
Size537.5 MB 103.5 MB
Events in quadrant A3,687,619710,175
Events in quadrant B5,281,416689,555
Events in quadrant C3,499,077700,524
Events in quadrant D4,105,633677,626

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159103
B0207032
C0154242
D0172282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73191401.912830%
B73195006.831534%
C7319801.093045%
D73191612.199754%

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 9155 7322 28 28 0.31% 0.38%
B 9155 7322 209 209 2.28% 2.85%
C 9155 7322 9 9 0.10% 0.12%
D 9155 7322 70 70 0.76% 0.96%

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 9 143 81001 446.68 892 873 179.4
A 15 249 48846 267.43 892 873 179.4
A 1 162 41681 227.49 892 873 179.4
B 4 239 900079 5470.94 873 850 164.4
B 0 85 338115 2051.93 873 850 164.4
B 15 204 192716 1167.32 873 850 164.4
C 15 208 106117 529.07 868 873 198.9
C 13 61 6427 27.92 868 873 198.9
C 14 234 4468 18.07 868 873 198.9
D 1 52 298526 1437.53 865 841 207.1
D 10 199 260351 1253.18 865 841 207.1
D 5 222 98094 469.64 865 841 207.1

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