ASTROSAT CZTI

Data Quality Report

Orbit 31080

Creation date: 2024-06-27T20:23:08.358257
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/AS1A10_109T01_9000004492_31080cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31080cztM0_level2_quad_clean.evt
Size (bytes)559,209,600111,862,080
Size533.3 MB 106.7 MB
Events in quadrant A3,269,433747,269
Events in quadrant B5,246,916752,217
Events in quadrant C3,836,015722,944
Events in quadrant D4,144,559713,333

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137413
B0199332
C0153762
D0166212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6481230.354884%
B64811191.836136%
C64812263.487116%
D6481661.018361%

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 7646 6482 2 2 0.03% 0.03%
B 7646 6482 3 3 0.04% 0.05%
C 7646 6482 48 48 0.63% 0.74%
D 7646 6482 48 48 0.63% 0.74%

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 11021 60.57 842 827 168.3
A 12 96 10446 57.15 842 827 168.3
A 3 137 8228 43.98 842 827 168.3
B 6 159 1814778 11419.47 840 818 158.8
B 0 183 43988 271.77 840 818 158.8
B 0 190 39688 244.7 840 818 158.8
C 0 10 253301 1327.77 817 827 190.1
C 10 22 243840 1278.01 817 827 190.1
C 14 238 132660 693.31 817 827 190.1
D 13 174 524340 2689.73 826 806 194.6
D 8 195 404768 2075.41 826 806 194.6
D 2 120 40589 204.39 826 806 194.6

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