ASTROSAT CZTI

Data Quality Report

Orbit 15750

Creation date: 2024-06-27T17:13:00.627783
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/AS1T02_088T01_9000002332_15750cztM0_level2.evt modeM0/AS1T02_088T01_9000002332_15750cztM0_level2_quad_clean.evt
Size (bytes)457,205,76067,737,600
Size436.0 MB 64.6 MB
Events in quadrant A3,324,203403,272
Events in quadrant B3,473,388406,537
Events in quadrant C3,361,153391,549
Events in quadrant D3,236,504386,641

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140943
B0142612
C0138682
D0140432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6635991.492087%
B66351181.778448%
C66351412.125094%
D6635831.250942%

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 7606 6637 1 1 0.01% 0.02%
B 7606 6636 5 5 0.07% 0.08%
C 7606 6636 2 2 0.03% 0.03%
D 7606 6637 4 4 0.05% 0.06%

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 3 80 81337 475.73 835 817 169.3
A 15 239 13643 75.78 835 817 169.3
A 4 2 7418 39.0 835 817 169.3
B 3 209 54899 335.58 839 820 161.1
B 4 216 37081 225.02 839 820 161.1
B 4 173 35143 212.99 839 820 161.1
C 14 238 123694 648.0 803 810 189.6
C 3 233 84988 443.89 803 810 189.6
C 10 187 11276 55.19 803 810 189.6
D 1 52 131138 655.13 812 788 199.0
D 2 234 25624 124.82 812 788 199.0
D 10 70 13700 64.89 812 788 199.0

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