ASTROSAT CZTI

Data Quality Report

Orbit 29239

Creation date: 2024-06-27T20:01:50.968490
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_272T01_9000004204_29239cztM0_level2.evt modeM0/AS1T03_272T01_9000004204_29239cztM0_level2_quad_clean.evt
Size (bytes)950,034,24068,774,400
Size906.0 MB 65.6 MB
Events in quadrant A3,162,103477,742
Events in quadrant B3,664,454471,856
Events in quadrant C8,408,953422,842
Events in quadrant D13,142,101298,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129181
B0145521
C0290611
D0430301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5865881.500426%
B58662303.920900%
C5866120920.610297%
D5866438574.752813%

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 7145 5866 0 0 0.00% 0.00%
B 7146 5867 93 93 1.30% 1.59%
C 7146 5867 615 615 8.61% 10.48%
D 7146 5867 4195 4195 58.70% 71.50%

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 13 254 11554 67.23 818 805 159.9
A 0 226 7112 39.45 818 805 159.9
A 3 137 6986 38.66 818 805 159.9
B 0 183 319356 2158.33 796 781 147.6
B 0 229 164886 1111.8 796 781 147.6
B 0 189 32480 214.76 796 781 147.6
C 3 233 5398720 32147.79 738 743 167.9
C 14 238 120017 710.34 738 743 167.9
C 2 114 13612 76.64 738 743 167.9
D 7 223 9633296 74901.61 546 532 128.6
D 1 52 992930 7716.6 546 532 128.6
D 8 195 195009 1512.2 546 532 128.6

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