ASTROSAT CZTI

Data Quality Report

Orbit 16614

Creation date: 2024-06-27T17:25:07.760072
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/AS1A05_064T01_9000002450_16614cztM0_level2.evt modeM0/AS1A05_064T01_9000002450_16614cztM0_level2_quad_clean.evt
Size (bytes)583,513,920108,889,920
Size556.5 MB 103.8 MB
Events in quadrant A2,735,983779,891
Events in quadrant B3,250,821777,923
Events in quadrant C3,704,568748,852
Events in quadrant D7,596,341594,081

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119072
B0134611
C0146861
D0264181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5656621.096181%
B5656921.626591%
C56561753.094059%
D5656204536.156294%

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 6852 5658 2 2 0.03% 0.04%
B 6852 5658 26 26 0.38% 0.46%
C 6852 5658 36 36 0.53% 0.64%
D 6852 5658 1577 1577 23.02% 27.87%

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 15 174 40702 286.22 696 682 139.8
A 15 69 18005 123.89 696 682 139.8
A 0 226 6227 39.66 696 682 139.8
B 15 35 302773 2338.17 691 674 129.2
B 0 198 112690 866.98 691 674 129.2
B 7 220 23453 176.3 691 674 129.2
C 3 233 957980 6183.68 670 675 154.8
C 14 238 104152 668.4 670 675 154.8
C 7 247 28820 181.8 670 675 154.8
D 1 52 5341175 38955.41 562 546 137.1
D 2 16 61185 442.31 562 546 137.1
D 10 70 33479 240.22 562 546 137.1

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