ASTROSAT CZTI

Data Quality Report

Orbit 05741

Creation date: 2024-06-27T14:58:34.247208
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/AS1A02_149T01_9000000740_05741cztM0_level2.evt modeM0/AS1A02_149T01_9000000740_05741cztM0_level2_quad_clean.evt
Size (bytes)518,186,88077,696,640
Size494.2 MB 74.1 MB
Events in quadrant A3,325,095469,864
Events in quadrant B3,666,123475,466
Events in quadrant C3,192,305477,904
Events in quadrant D5,026,862433,869

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01442

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148737
B0154988
C0144618
D0198182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7125620.870175%
B7124480.673779%
C7124160.224593%
D71274626.482391%

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 8972 7129 34 34 0.38% 0.48%
B 8972 7129 6 6 0.07% 0.08%
C 8972 7129 0 0 0.00% 0.00%
D 8972 7129 341 341 3.80% 4.78%

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 93304 543.2 828 809 170.3
A 15 236 36373 208.86 828 809 170.3
A 0 31 11139 60.66 828 809 170.3
B 15 204 184624 1127.41 841 822 163.0
B 11 51 62301 377.1 841 822 163.0
B 4 81 50602 305.34 841 822 163.0
C 14 67 15497 77.3 812 814 189.9
C 13 61 6550 30.2 812 814 189.9
C 8 222 4455 19.17 812 814 189.9
D 4 95 1445279 7407.07 786 762 195.0
D 0 11 369851 1892.58 786 762 195.0
D 11 241 78474 398.48 786 762 195.0

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