ASTROSAT CZTI

Data Quality Report

Orbit 04778

Creation date: 2024-06-27T14:46:51.721367
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_218T05_9000000602_04778cztM0_level2.evt modeM0/AS1G05_218T05_9000000602_04778cztM0_level2_quad_clean.evt
Size (bytes)690,462,72073,454,400
Size658.5 MB 70.1 MB
Events in quadrant A3,383,877476,545
Events in quadrant B3,130,234480,721
Events in quadrant C8,447,031371,384
Events in quadrant D5,512,525443,884

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144253
B0137402
C0295962
D0210192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64651011.562258%
B6465130.201083%
C6465230535.653519%
D64652003.093581%

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 7635 6466 71 71 0.93% 1.10%
B 7635 6466 2 2 0.03% 0.03%
C 7635 6466 1881 1881 24.64% 29.09%
D 7635 6466 245 245 3.21% 3.79%

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 378055 2548.22 728 712 148.1
A 8 15 181920 1223.71 728 712 148.1
A 14 111 16474 106.44 728 712 148.1
B 4 80 134974 945.81 747 729 141.9
B 14 167 41559 287.66 747 729 141.9
B 15 54 21576 146.87 747 729 141.9
C 14 48 6089453 43831.58 596 597 138.9
C 1 16 16932 117.59 596 597 138.9
C 9 237 8915 59.88 596 597 138.9
D 11 132 2187176 12942.22 706 687 168.9
D 2 136 206213 1216.55 706 687 168.9
D 13 235 157132 926.03 706 687 168.9

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