ASTROSAT CZTI

Data Quality Report

Orbit 17831

Creation date: 2024-06-27T17:41:26.473890
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/AS1A05_015T01_9000002650_17831cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17831cztM0_level2_quad_clean.evt
Size (bytes)195,940,80043,807,680
Size186.9 MB 41.8 MB
Events in quadrant A1,319,939285,382
Events in quadrant B1,538,545293,294
Events in quadrant C1,406,621283,170
Events in quadrant D1,488,242275,977

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057301
B063691
C059271
D062771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2632150.569909%
B2632331.253799%
C2632321.215805%
D2632281.063830%

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 2632 2632 0 0 0.00% 0.00%
B 2632 2632 6 6 0.23% 0.23%
C 2632 2632 0 0 0.00% 0.00%
D 2632 2632 20 20 0.76% 0.76%

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 0 226 2954 37.83 342 336 69.2
A 12 194 2471 30.85 342 336 69.2
A 3 137 2412 30.0 342 336 69.2
B 10 245 94143 1416.82 349 341 66.2
B 0 189 16854 249.42 349 341 66.2
B 15 222 15210 224.59 349 341 66.2
C 14 238 54227 673.69 341 345 80.0
C 5 218 10826 131.04 341 345 80.0
C 5 33 6692 79.36 341 345 80.0
D 7 238 147885 1629.93 335 329 90.5
D 10 70 38052 416.69 335 329 90.5
D 1 52 13813 148.95 335 329 90.5

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