ASTROSAT CZTI

Data Quality Report

Orbit 20220312_A11_053T01_9000004996_level2

Creation date: 2022-03-14T17:44:05.382620
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/AS1A11_053T01_9000004996cztM0_level2_bc.evt modeM0/AS1A11_053T01_9000004996cztM0_level2_quad_clean.evt
Size (bytes)1,087,896,960423,691,200
Size1.0 GB 404.1 MB
Events in quadrant A5,410,6072,791,109
Events in quadrant B6,965,3112,853,248
Events in quadrant C6,882,3802,891,891
Events in quadrant D12,025,5332,620,739

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01170
C01170
D01170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05000
B05000
C05000
D05000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500630
B0569290
C0526710
D0725060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24376270.110765%
B243764611.891204%
C243762260.927141%
D2437612615.173121%

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 36035 24382 0 0 0.00% 0.00%
B 36035 24376 66 66 0.18% 0.27%
C 36035 24377 15 15 0.04% 0.06%
D 36035 24375 188 188 0.52% 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 10 83 197175 684.13 1311 1296 286.3
A 13 254 42017 142.22 1311 1296 286.3
A 7 16 38553 130.12 1311 1296 286.3
B 5 172 668263 2567.02 1334 1308 259.8
B 0 190 368046 1411.53 1334 1308 259.8
B 0 218 147671 563.33 1334 1308 259.8
C 15 214 1040385 3402.96 1330 1325 305.3
C 0 10 340360 1110.35 1330 1325 305.3
C 14 67 129760 420.63 1330 1325 305.3
D 8 195 3949002 13031.0 1279 1243 303.0
D 1 52 823281 2713.43 1279 1243 303.0
D 10 118 469943 1547.11 1279 1243 303.0

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