ASTROSAT CZTI

Data Quality Report

Orbit 18212

Creation date: 2024-06-27T17:46:49.729656
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/AS1T03_003T01_9000002712_18212cztM0_level2.evt modeM0/AS1T03_003T01_9000002712_18212cztM0_level2_quad_clean.evt
Size (bytes)589,095,36076,844,160
Size561.8 MB 73.3 MB
Events in quadrant A4,152,098459,231
Events in quadrant B3,660,468468,869
Events in quadrant C3,534,898455,383
Events in quadrant D6,004,252440,916

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169052
B0153352
C0149422
D0226222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72062273.150153%
B72061482.053844%
C72051672.317835%
D72056869.521166%

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 8756 7208 62 62 0.71% 0.86%
B 8756 7208 5 5 0.06% 0.07%
C 8755 7207 0 0 0.00% 0.00%
D 8755 7207 521 521 5.95% 7.23%

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 640373 3470.57 906 885 184.3
A 4 208 21441 111.56 906 885 184.3
A 4 2 10402 51.65 906 885 184.3
B 7 220 73288 410.28 904 881 176.5
B 12 111 20670 112.13 904 881 176.5
B 11 111 17726 95.45 904 881 176.5
C 14 238 133918 647.1 868 873 205.6
C 3 233 13252 60.21 868 873 205.6
C 13 61 6203 25.92 868 873 205.6
D 7 238 2299057 10879.25 861 836 211.2
D 5 222 222669 1050.11 861 836 211.2
D 5 51 57761 269.47 861 836 211.2

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