ASTROSAT CZTI

Data Quality Report

Orbit 04744

Creation date: 2024-06-27T14:46:32.111208
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_207T01_9000000596_04744cztM0_level2.evt modeM0/AS1G05_207T01_9000000596_04744cztM0_level2_quad_clean.evt
Size (bytes)684,694,08069,445,440
Size653.0 MB 66.2 MB
Events in quadrant A3,011,834468,546
Events in quadrant B3,048,056473,889
Events in quadrant C10,002,810277,442
Events in quadrant D4,242,854438,530

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133742
B0132071
C0340001
D0169921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6347731.150150%
B6347600.945329%
C6347287245.249724%
D63475138.082559%

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 7392 6347 7 7 0.09% 0.11%
B 7392 6347 0 0 0.00% 0.00%
C 7392 6348 2525 2525 34.16% 39.78%
D 7392 6347 270 270 3.65% 4.25%

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 7 16 94242 604.07 754 737 154.8
A 0 50 14120 86.46 754 737 154.8
A 0 226 7579 44.2 754 737 154.8
B 4 80 74721 504.14 759 739 146.7
B 14 167 16052 104.35 759 739 146.7
B 12 111 13983 90.25 759 739 146.7
C 14 48 7929576 64065.95 530 533 123.8
C 13 61 4167 29.36 530 533 123.8
C 12 4 1783 10.1 530 533 123.8
D 13 239 845037 5081.22 691 672 166.2
D 13 137 392312 2356.81 691 672 166.2
D 1 31 248296 1490.15 691 672 166.2

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