ASTROSAT CZTI

Data Quality Report

Orbit 42041

Creation date: 2024-06-27T22:36:06.358149
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/AS1A12_037T01_9000005736_42041cztM0_level2.fits modeM0/AS1A12_037T01_9000005736_42041cztM0_level2_quad_clean.evt
Size (bytes)305,242,56087,840,000
Size291.1 MB 83.8 MB
Events in quadrant A3,131,450592,605
Events in quadrant B2,558,724612,371
Events in quadrant C2,516,874577,621
Events in quadrant D2,697,464522,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123773
B0107892
C0103902
D0114762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5061260.513732%
B5061731.442403%
C506140.079036%
D5061671.323849%

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 7214 5062 16 16 0.22% 0.32%
B 7214 5062 49 49 0.68% 0.97%
C 7214 5062 0 0 0.00% 0.00%
D 7214 5062 57 57 0.79% 1.13%

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 537139 4436.1 588 576 121.0
A 15 222 180712 1489.3 588 576 121.0
A 15 223 60622 496.44 588 576 121.0
B 15 85 140590 1250.11 583 568 112.0
B 5 255 61820 546.86 583 568 112.0
B 0 190 39659 349.0 583 568 112.0
C 15 214 216176 1619.86 569 574 133.1
C 7 220 59844 445.3 569 574 133.1
C 12 249 16057 116.32 569 574 133.1
D 1 52 224594 1624.22 564 548 137.9
D 13 249 103571 746.87 564 548 137.9
D 12 6 79229 570.4 564 548 137.9

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