ASTROSAT CZTI

Data Quality Report

Orbit 18511

Creation date: 2024-06-27T17:50:48.990183
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/AS1A05_187T03_9000002748_18511cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18511cztM0_level2_quad_clean.evt
Size (bytes)149,204,16035,303,040
Size142.3 MB 33.7 MB
Events in quadrant A1,102,687240,841
Events in quadrant B1,082,361245,281
Events in quadrant C1,047,386228,420
Events in quadrant D1,161,533222,533

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044391
B043321
C042341
D047281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1800603.333333%
B1799633.501946%
C1799563.112840%
D1799502.779322%

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 3060 1800 7 7 0.23% 0.39%
B 3059 1799 4 4 0.13% 0.22%
C 3059 1799 0 0 0.00% 0.00%
D 3059 1799 9 9 0.29% 0.50%

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 13 33809 600.59 270 264 55.9
A 14 238 12729 223.17 270 264 55.9
A 11 47 11927 208.82 270 264 55.9
B 7 220 17275 329.5 267 261 51.6
B 6 36 15283 290.92 267 261 51.6
B 12 111 5578 102.97 267 261 51.6
C 14 238 39996 660.45 255 256 60.2
C 3 233 4463 69.92 255 256 60.2
C 5 112 4231 66.06 255 256 60.2
D 13 168 65782 1017.34 262 254 64.4
D 1 52 44069 680.24 262 254 64.4
D 7 238 39074 602.69 262 254 64.4

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