ASTROSAT CZTI

Data Quality Report

Orbit 08996

Creation date: 2024-06-27T15:39:54.132288
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/AS1C02_037T01_9000001252_08996cztM0_level2.evt modeM0/AS1C02_037T01_9000001252_08996cztM0_level2_quad_clean.evt
Size (bytes)821,520,000127,984,320
Size783.5 MB 122.1 MB
Events in quadrant A7,210,854765,797
Events in quadrant B5,888,958780,506
Events in quadrant C5,190,804772,359
Events in quadrant D5,795,043746,136

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02422
B02414
C02426
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304391055
B025884651
C024259486
D025964599

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116611341.149130%
B117261040.886918%
C11759290.246620%
D117461170.996084%

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 13366 11922 45 45 0.34% 0.38%
B 13366 11947 15 15 0.11% 0.13%
C 13366 11951 0 0 0.00% 0.00%
D 13366 11965 78 78 0.58% 0.65%

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 8 5 1783306 6490.65 1348 1319 274.5
A 3 1 139339 502.72 1348 1319 274.5
A 5 16 61752 220.12 1348 1319 274.5
B 4 173 127775 478.53 1370 1336 264.2
B 4 48 95098 354.86 1370 1336 264.2
B 0 214 84402 314.38 1370 1336 264.2
C 13 61 10056 28.31 1325 1333 308.1
C 1 3 8021 21.71 1325 1333 308.1
C 14 67 6434 16.56 1325 1333 308.1
D 2 14 302049 918.38 1319 1278 327.5
D 1 52 244429 742.44 1319 1278 327.5
D 2 234 53260 158.72 1319 1278 327.5

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