ASTROSAT CZTI

Data Quality Report

Orbit 31597

Creation date: 2024-06-27T20:30:29.980141
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/AS1C06_002T03_9000004610_31597cztM0_level2.evt modeM0/AS1C06_002T03_9000004610_31597cztM0_level2_quad_clean.evt
Size (bytes)689,463,360122,981,760
Size657.5 MB 117.3 MB
Events in quadrant A2,929,951862,722
Events in quadrant B5,716,612847,824
Events in quadrant C3,678,516844,891
Events in quadrant D8,151,393750,062

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126691
B0213771
C0148312
D0284681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5995340.567139%
B59962934.886591%
C59952474.120100%
D5995110018.348624%

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 7195 5995 2 2 0.03% 0.03%
B 7196 5996 117 117 1.63% 1.95%
C 7195 5995 114 114 1.58% 1.90%
D 7195 5995 1128 1128 15.68% 18.82%

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 42415 282.0 745 731 147.8
A 13 254 11673 74.02 745 731 147.8
A 4 208 8684 53.8 745 731 147.8
B 6 159 1980517 14447.44 736 719 137.0
B 12 1 249756 1817.33 736 719 137.0
B 5 172 172688 1254.93 736 719 137.0
C 3 233 470120 2754.0 730 734 170.4
C 14 238 118455 690.7 730 734 170.4
C 10 22 64050 371.49 730 734 170.4
D 8 195 4390093 27025.2 690 672 162.4
D 12 2 462690 2844.6 690 672 162.4
D 12 218 248070 1523.2 690 672 162.4

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