ASTROSAT CZTI

Data Quality Report

Orbit 12538

Creation date: 2024-06-27T16:28:52.195759
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/AS1A04_130T01_9000001856_12538cztM0_level2.evt modeM0/AS1A04_130T01_9000001856_12538cztM0_level2_quad_clean.evt
Size (bytes)491,866,56077,011,200
Size469.1 MB 73.4 MB
Events in quadrant A3,777,423463,112
Events in quadrant B3,656,112461,537
Events in quadrant C3,406,679458,631
Events in quadrant D3,565,108445,502

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156843
B0154532
C0149532
D0156102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72271692.338453%
B72272072.864259%
C72271001.383700%
D72271221.688114%

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 8463 7229 0 0 0.00% 0.00%
B 8463 7228 1 1 0.01% 0.01%
C 8463 7230 0 0 0.00% 0.00%
D 8463 7229 32 32 0.38% 0.44%

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 1 162 126632 698.85 881 860 180.0
A 1 178 74142 407.19 881 860 180.0
A 1 161 61928 339.32 881 860 180.0
B 4 239 124058 721.8 880 857 170.7
B 0 214 21388 120.28 880 857 170.7
B 10 246 20581 115.55 880 857 170.7
C 3 0 40699 197.57 862 866 201.6
C 13 61 6533 28.11 862 866 201.6
C 3 233 4321 17.14 862 866 201.6
D 1 52 196257 948.48 855 830 206.0
D 8 195 46798 223.1 855 830 206.0
D 13 104 36364 172.46 855 830 206.0

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