ASTROSAT CZTI

Data Quality Report

Orbit 14629

Creation date: 2024-06-27T16:57:42.307611
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/AS1G08_026T01_9000002154_14629cztM0_level2.evt modeM0/AS1G08_026T01_9000002154_14629cztM0_level2_quad_clean.evt
Size (bytes)589,510,08066,052,800
Size562.2 MB 63.0 MB
Events in quadrant A3,618,354396,061
Events in quadrant B3,540,377389,517
Events in quadrant C6,940,018369,213
Events in quadrant D3,308,784385,155

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150223
B0146582
C0254732
D0141642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6587861.305602%
B65871001.518142%
C65871542.337938%
D6587761.153788%

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 7663 6588 1 1 0.01% 0.02%
B 7663 6588 9 9 0.12% 0.14%
C 7663 6588 2 2 0.03% 0.03%
D 7663 6588 12 12 0.16% 0.18%

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 23 102857 593.85 850 830 171.8
A 1 162 99210 572.62 850 830 171.8
A 1 178 42232 240.98 850 830 171.8
B 0 189 155422 957.84 841 821 161.4
B 4 173 32788 198.05 841 821 161.4
B 12 111 18837 111.62 841 821 161.4
C 3 233 3767525 20183.06 807 812 186.6
C 3 234 17705 90.52 807 812 186.6
C 3 232 6710 31.6 807 812 186.6
D 10 199 59240 297.47 823 803 196.4
D 2 152 34659 172.34 823 803 196.4
D 10 70 33349 165.67 823 803 196.4

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