ASTROSAT CZTI

Data Quality Report

Orbit 24752

Creation date: 2024-06-27T19:09:28.876884
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/AS1A07_018T08_9000003622_24752cztM0_level2.evt modeM0/AS1A07_018T08_9000003622_24752cztM0_level2_quad_clean.evt
Size (bytes)433,543,68081,339,840
Size413.5 MB 77.6 MB
Events in quadrant A2,912,984535,230
Events in quadrant B2,966,589537,668
Events in quadrant C2,976,216505,441
Events in quadrant D3,897,522496,930

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116541
B0118421
C0119441
D0154131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5547871.568415%
B5548991.784427%
C55481091.964672%
D5548991.784427%

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 6822 5548 0 0 0.00% 0.00%
B 6823 5549 8 8 0.12% 0.14%
C 6823 5549 8 8 0.12% 0.14%
D 6823 5549 43 43 0.63% 0.77%

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 9183 56.15 753 740 150.4
A 0 226 6702 39.65 753 740 150.4
A 3 137 6303 37.0 753 740 150.4
B 4 80 29708 207.99 734 719 139.4
B 0 189 19524 134.92 734 719 139.4
B 12 111 16212 111.16 734 719 139.4
C 14 238 113770 696.61 702 707 162.3
C 8 222 81109 495.38 702 707 162.3
C 5 112 37534 226.9 702 707 162.3
D 8 195 603287 3416.1 722 701 176.4
D 1 52 301130 1703.15 722 701 176.4
D 7 238 236024 1334.06 722 701 176.4

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