ASTROSAT CZTI

Data Quality Report

Orbit 08658

Creation date: 2024-06-27T15:35:33.788502
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/AS1G07_024T01_9000001206_08658cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08658cztM0_level2_quad_clean.evt
Size (bytes)465,491,520128,309,760
Size443.9 MB 122.4 MB
Events in quadrant A3,132,555841,054
Events in quadrant B3,506,398866,330
Events in quadrant C3,099,517863,162
Events in quadrant D3,871,641816,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146533
B0154932
C0146242
D0170062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7167440.613925%
B7167921.283661%
C7167260.362774%
D7167981.367378%

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 7872 7168 0 0 0.00% 0.00%
B 7872 7168 32 32 0.41% 0.45%
C 7872 7168 2 2 0.03% 0.03%
D 7872 7168 60 60 0.76% 0.84%

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 8 5 62224 383.01 793 773 160.4
A 15 174 10094 58.1 793 773 160.4
A 0 226 7406 41.34 793 773 160.4
B 10 16 140831 920.93 807 787 152.1
B 0 230 69507 451.9 807 787 152.1
B 4 48 57390 372.22 807 787 152.1
C 1 16 40488 219.78 782 786 180.6
C 13 61 5964 28.66 782 786 180.6
C 12 4 3623 15.7 782 786 180.6
D 13 137 544576 2902.17 770 747 187.4
D 1 52 79359 419.52 770 747 187.4
D 10 253 77792 411.15 770 747 187.4

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