ASTROSAT CZTI

Data Quality Report

Orbit 20200225_A07_149T01_9000003534_level2

Creation date: 2025-12-09T15:15:33.160961
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/AS1A07_149T01_9000003534cztM0_level2.fits modeM0/AS1A07_149T01_9000003534cztM0_level2_quad_clean.evt
Size (bytes)655,110,720589,769,280
Size624.8 MB 562.4 MB
Events in quadrant A4,108,8743,503,150
Events in quadrant B3,894,8113,507,246
Events in quadrant C3,920,2333,315,498
Events in quadrant D3,430,1963,048,977

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01365800
B01387850
C01402210
D01607940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013260
B013280
C013360
D013230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A654537161.093915%
B654038891.359265%
C6541811251.719710%
D6539215372.350440%

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 92250 65843 0 0 0.00% 0.00%
B 92250 65805 0 0 0.00% 0.00%
C 92250 65835 0 0 0.00% 0.00%
D 92250 65799 0 0 0.00% 0.00%

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 0 29 3958 11.17 1070 1009 264.0
A 7 110 3293 8.65 1070 1009 264.0
A 0 30 3105 7.94 1070 1009 264.0
B 2 9 3179 10.86 1032 991 201.4
B 2 8 2648 8.23 1032 991 201.4
B 3 80 2520 7.59 1032 991 201.4
C 1 80 3044 7.86 1034 971 263.6
C 1 81 3010 7.74 1034 971 263.6
C 12 241 2768 6.82 1034 971 263.6
D 3 14 2550 6.42 978 894 258.1
D 10 189 2406 5.86 978 894 258.1
D 15 46 2403 5.85 978 894 258.1

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