ASTROSAT CZTI

Data Quality Report

Orbit 04955

Creation date: 2024-06-27T14:49:19.086728
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/AS1G05_157T01_9000000626_04955cztM0_level2.evt modeM0/AS1G05_157T01_9000000626_04955cztM0_level2_quad_clean.evt
Size (bytes)637,943,040103,913,280
Size608.4 MB 99.1 MB
Events in quadrant A4,128,538663,295
Events in quadrant B4,511,620647,735
Events in quadrant C3,601,529661,857
Events in quadrant D6,522,746604,169

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180853
B01907810
C0168562
D0251872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81951892.306284%
B81943654.454479%
C8195410.500305%
D81958179.969494%

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 8540 8197 85 85 1.00% 1.04%
B 8540 8195 133 133 1.56% 1.62%
C 8540 8198 0 0 0.00% 0.00%
D 8540 8198 658 658 7.70% 8.03%

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 50 240686 1240.25 947 924 193.3
A 0 31 161329 829.75 947 924 193.3
A 15 174 32333 162.47 947 924 193.3
B 8 3 336385 1833.01 948 924 183.0
B 10 16 312390 1701.89 948 924 183.0
B 15 204 52824 283.59 948 924 183.0
C 13 61 7538 31.17 916 919 212.4
C 8 128 5634 22.2 916 919 212.4
C 14 67 5596 22.02 916 919 212.4
D 2 33 1255013 5749.72 880 851 218.1
D 13 235 960932 4401.5 880 851 218.1
D 2 136 391771 1792.18 880 851 218.1

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