ASTROSAT CZTI

Data Quality Report

Orbit 20812

Creation date: 2024-06-27T18:19:50.122607
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_013T01_9000003070_20812cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20812cztM0_level2_quad_clean.evt
Size (bytes)1,297,080,000214,329,600
Size1.2 GB 204.4 MB
Events in quadrant A7,976,7231,374,778
Events in quadrant B8,940,8771,371,928
Events in quadrant C8,033,9551,343,086
Events in quadrant D13,231,5261,277,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339943
B0367873
C0342573
D0509083

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16297820.503160%
B162982311.417352%
C162981761.079887%
D162985923.632348%

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 19672 16297 1 1 0.01% 0.01%
B 19673 16298 77 77 0.39% 0.47%
C 19673 16298 0 0 0.00% 0.00%
D 19673 16298 425 425 2.16% 2.61%

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 13 252 30910 70.89 2059 2019 407.6
A 0 253 23637 53.04 2059 2019 407.6
A 0 226 17582 38.19 2059 2019 407.6
B 7 220 496378 1317.93 2032 1990 375.1
B 4 171 226166 597.6 2032 1990 375.1
B 0 189 98599 257.54 2032 1990 375.1
C 14 238 317070 700.05 1971 1986 450.1
C 9 54 21251 42.8 1971 1986 450.1
C 13 61 13769 26.18 1971 1986 450.1
D 1 20 3680807 7817.01 1973 1920 470.6
D 1 52 1083618 2298.43 1973 1920 470.6
D 9 1 744668 1578.21 1973 1920 470.6

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