ASTROSAT CZTI

Data Quality Report

Orbit 15384

Creation date: 2024-06-27T17:07:47.465933
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/AS1C03_001T01_9000002270_15384cztM0_level2.evt modeM0/AS1C03_001T01_9000002270_15384cztM0_level2_quad_clean.evt
Size (bytes)741,556,800117,132,480
Size707.2 MB 111.7 MB
Events in quadrant A6,557,972714,439
Events in quadrant B4,497,007825,524
Events in quadrant C3,264,552826,368
Events in quadrant D7,713,201740,437

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236912
B0174231
C0133601
D0271991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6295161425.639396%
B62953295.226370%
C6295671.064337%
D6295149023.669579%

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 7486 6296 879 879 11.74% 13.96%
B 7486 6296 193 193 2.58% 3.07%
C 7486 6296 2 2 0.03% 0.03%
D 7486 6296 1244 1244 16.62% 19.76%

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 14 238 2974051 22082.5 679 667 134.6
A 14 237 929013 6894.57 679 667 134.6
A 9 143 27143 196.63 679 667 134.6
B 10 245 665554 4673.81 768 750 142.2
B 10 16 329353 2310.2 768 750 142.2
B 7 220 98098 684.39 768 750 142.2
C 3 233 285102 1655.73 758 761 171.7
C 0 207 14998 82.9 758 761 171.7
C 10 22 7737 40.62 758 761 171.7
D 13 122 4314624 24213.12 729 707 178.2
D 2 33 201599 1127.56 729 707 178.2
D 5 222 143093 799.18 729 707 178.2

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