ASTROSAT CZTI

Data Quality Report

Orbit 03091

Creation date: 2024-06-27T14:24:31.625917
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_237T03_9000000426_03091cztM0_level2.evt modeM0/AS1G05_237T03_9000000426_03091cztM0_level2_common_clean.evt
Size (bytes)1,036,578,240170,179,200
Size988.6 MB 162.3 MB
Events in quadrant A6,963,4151,056,049
Events in quadrant B7,165,7641,052,428
Events in quadrant C7,434,7141,054,124
Events in quadrant D8,871,7331,015,167

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301304
B0308783
C0318123
D0362463

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141541170.826621%
B141541861.314116%
C141542341.653243%
D141544403.108662%

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 15884 14157 13 13 0.08% 0.09%
B 15884 14157 45 45 0.28% 0.32%
C 15884 14157 126 126 0.79% 0.89%
D 15884 14157 229 229 1.44% 1.62%

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 511901 1532.16 1636 1604 333.1
A 8 15 52893 153.99 1636 1604 333.1
A 13 251 31565 89.96 1636 1604 333.1
B 0 219 213573 671.62 1651 1616 315.6
B 15 204 207079 651.04 1651 1616 315.6
B 2 249 92498 287.97 1651 1616 315.6
C 14 223 662989 1796.05 1582 1592 368.3
C 2 247 185289 498.84 1582 1592 368.3
C 1 16 154672 415.69 1582 1592 368.3
D 1 7 1347612 3233.53 1552 1517 416.3
D 13 114 436396 1044.65 1552 1517 416.3
D 2 136 413467 989.57 1552 1517 416.3

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
Veto Counter