ASTROSAT CZTI

Data Quality Report

Orbit 18588

Creation date: 2024-06-27T17:51:58.168909
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_072T02_9000002762_18588cztM0_level2.evt modeM0/AS1A05_072T02_9000002762_18588cztM0_level2_quad_clean.evt
Size (bytes)557,809,92092,609,280
Size532.0 MB 88.3 MB
Events in quadrant A3,612,336574,288
Events in quadrant B3,663,481595,011
Events in quadrant C4,106,230577,484
Events in quadrant D5,010,445543,756

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155982
B0156192
C0168082
D0198052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7382430.582498%
B7382690.934706%
C73821702.302899%
D73833694.997968%

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 9292 7384 3 3 0.03% 0.04%
B 9292 7384 0 0 0.00% 0.00%
C 9292 7384 56 56 0.60% 0.76%
D 9293 7385 312 312 3.36% 4.22%

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 40874 213.69 924 902 187.1
A 13 254 12629 62.69 924 902 187.1
A 0 226 7924 37.54 924 902 187.1
B 12 111 21755 115.52 932 907 180.5
B 11 111 18809 99.19 932 907 180.5
B 14 111 16306 85.33 932 907 180.5
C 4 254 440231 2092.9 895 903 209.9
C 14 238 138076 653.47 895 903 209.9
C 9 54 29216 134.88 895 903 209.9
D 7 238 1093900 5050.47 887 860 216.4
D 1 52 478016 2204.73 887 860 216.4
D 5 222 65703 299.61 887 860 216.4

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