ASTROSAT CZTI

Data Quality Report

Orbit 34913

Creation date: 2022-03-14T02:49:13.679487
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/AS1A11_086T01_9000005002_34913cztM0_level2.evt modeM0/AS1A11_086T01_9000005002_34913cztM0_level2_quad_clean.evt
Size (bytes)401,037,12082,782,720
Size382.5 MB 78.9 MB
Events in quadrant A2,469,213541,087
Events in quadrant B2,858,703549,476
Events in quadrant C2,980,553543,826
Events in quadrant D3,490,124514,892

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106153
B0116832
C0119092
D0138912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510360.117578%
B51031142.233980%
C5103991.940035%
D5103340.666275%

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 7076 5104 0 0 0.00% 0.00%
B 7076 5104 71 71 1.00% 1.39%
C 7076 5104 83 83 1.17% 1.63%
D 7076 5104 30 30 0.42% 0.59%

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 10 83 59696 480.87 618 608 122.9
A 13 6 15587 121.9 618 608 122.9
A 13 254 8797 66.64 618 608 122.9
B 5 172 362174 3128.73 613 599 115.6
B 0 190 38017 323.78 613 599 115.6
B 5 200 19693 165.22 613 599 115.6
C 15 214 215505 1527.36 609 614 140.7
C 0 10 211930 1501.95 609 614 140.7
C 12 250 165734 1173.61 609 614 140.7
D 8 195 730952 4970.2 609 593 146.9
D 7 223 118685 803.63 609 593 146.9
D 1 52 104593 707.74 609 593 146.9

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