ASTROSAT CZTI

Data Quality Report

Orbit 36475

Creation date: 2022-06-30T11:10:13.876638
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_049T02_9000005206_36475cztM0_level2.evt modeM0/AS1A11_049T02_9000005206_36475cztM0_level2_quad_clean.evt
Size (bytes)387,881,28069,998,400
Size369.9 MB 66.8 MB
Events in quadrant A2,708,583443,320
Events in quadrant B2,727,884442,643
Events in quadrant C2,928,933435,666
Events in quadrant D3,013,167418,809

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113583
B0113912
C0119042
D0125162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A541740.073842%
B5417270.498431%
C5417661.218387%
D5417741.366070%

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 7181 5418 0 0 0.00% 0.00%
B 7181 5418 12 12 0.17% 0.22%
C 7181 5418 41 41 0.57% 0.76%
D 7181 5418 48 48 0.67% 0.89%

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 198912 1532.17 644 632 129.4
A 13 6 11905 87.11 644 632 129.4
A 13 254 8920 64.04 644 632 129.4
B 5 255 60737 498.23 634 619 120.7
B 5 172 36943 301.04 634 619 120.7
B 0 190 29179 236.69 634 619 120.7
C 0 10 266563 1859.43 619 623 143.0
C 15 214 235173 1639.95 619 623 143.0
C 0 207 10146 66.58 619 623 143.0
D 13 249 221769 1473.5 621 604 150.1
D 10 199 93937 621.83 621 604 150.1
D 2 153 83092 549.57 621 604 150.1

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