ASTROSAT CZTI

Data Quality Report

Orbit 18912

Creation date: 2024-06-27T17:56:27.388338
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_163T01_9000002820_18912cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18912cztM0_level2_quad_clean.evt
Size (bytes)1,903,913,280211,366,080
Size1.8 GB 201.6 MB
Events in quadrant A28,578,003883,136
Events in quadrant B11,503,6131,461,629
Events in quadrant C8,004,9111,466,916
Events in quadrant D8,450,2121,436,795

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0963463
B0453733
C0342853
D0360563

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16673924655.454927%
B1667412487.484707%
C166741681.007557%
D16674870.521770%

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 18738 16670 6804 6804 36.31% 40.82%
B 18739 16677 727 727 3.88% 4.36%
C 18739 16677 6 6 0.03% 0.04%
D 18739 16677 31 31 0.17% 0.19%

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 14 235 23360705 85717.73 1347 1316 272.5
A 13 210 18734 63.92 1347 1316 272.5
A 13 254 17061 57.78 1347 1316 272.5
B 3 112 3583827 9664.88 1923 1870 370.6
B 0 189 145379 387.22 1923 1870 370.6
B 7 220 56301 146.87 1923 1870 370.6
C 14 238 295997 658.49 1913 1934 446.6
C 3 233 196662 436.05 1913 1934 446.6
C 0 207 48869 105.1 1913 1934 446.6
D 12 110 291683 618.66 1932 1875 468.4
D 7 238 274749 582.51 1932 1875 468.4
D 14 34 180370 381.04 1932 1875 468.4

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