ASTROSAT CZTI

Data Quality Report

Orbit 25195

Creation date: 2024-06-27T19:14:56.604912
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_027T01_9000003690_25195cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25195cztM0_level2_quad_clean.evt
Size (bytes)481,343,040100,128,960
Size459.0 MB 95.5 MB
Events in quadrant A3,276,427648,415
Events in quadrant B3,276,320655,863
Events in quadrant C3,581,263627,583
Events in quadrant D3,980,478625,344

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139990
B0139950
C0149050
D0160860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6818530.777354%
B6818570.836022%
C68181942.845409%
D6818991.452039%

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 7713 6819 0 0 0.00% 0.00%
B 7713 6819 0 0 0.00% 0.00%
C 7713 6819 25 25 0.32% 0.37%
D 7713 6819 42 42 0.54% 0.62%

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 13 170 18508 103.57 844 826 170.7
A 13 254 10135 54.53 844 826 170.7
A 3 137 7619 39.79 844 826 170.7
B 12 111 19728 118.59 830 810 159.5
B 11 111 17863 106.9 830 810 159.5
B 14 111 16395 97.7 830 810 159.5
C 0 239 278899 1468.02 806 811 189.4
C 14 238 127095 666.65 806 811 189.4
C 8 208 19972 101.15 806 811 189.4
D 8 195 320792 1603.26 828 806 199.6
D 12 233 274156 1369.59 828 806 199.6
D 2 244 116542 579.88 828 806 199.6

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