ASTROSAT CZTI

Data Quality Report

Orbit 23903

Creation date: 2024-06-27T18:59:57.186672
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/AS1A07_142T01_9000003540_23903cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23903cztM0_level2_quad_clean.evt
Size (bytes)537,704,640105,739,200
Size512.8 MB 100.8 MB
Events in quadrant A3,647,836680,469
Events in quadrant B3,805,847691,349
Events in quadrant C3,751,851656,981
Events in quadrant D4,558,600640,254

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158392
B0161652
C0159223
D0184302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7672480.625652%
B76731091.420566%
C76721211.577164%
D76721021.329510%

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 8207 7674 0 0 0.00% 0.00%
B 8208 7675 13 13 0.16% 0.17%
C 8207 7674 2 2 0.02% 0.03%
D 8207 7674 43 43 0.52% 0.56%

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 13 254 12532 60.53 944 924 191.8
A 3 137 8343 38.69 944 924 191.8
A 0 226 8170 37.78 944 924 191.8
B 0 228 41627 226.24 945 921 179.9
B 12 111 21473 114.22 945 921 179.9
B 11 111 18847 99.63 945 921 179.9
C 14 238 142222 660.87 907 914 213.8
C 0 10 35663 162.51 907 914 213.8
C 10 9 12849 55.82 907 914 213.8
D 12 218 340499 1530.1 913 885 222.0
D 1 52 299888 1347.13 913 885 222.0
D 7 238 240401 1079.12 913 885 222.0

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