ASTROSAT CZTI

Data Quality Report

Orbit 12027

Creation date: 2024-06-27T16:21:23.358349
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/AS1A04_044T01_9000001782_12027cztM0_level2.evt modeM0/AS1A04_044T01_9000001782_12027cztM0_level2_quad_clean.evt
Size (bytes)523,981,440107,256,960
Size499.7 MB 102.3 MB
Events in quadrant A3,728,886715,419
Events in quadrant B3,924,641723,250
Events in quadrant C3,228,393691,861
Events in quadrant D4,537,808656,084

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153513
B0159282
C0139562
D0178542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66251141.720755%
B66251722.596226%
C6625580.875472%
D66252173.275472%

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 7911 6626 10 10 0.13% 0.15%
B 7911 6626 45 45 0.57% 0.68%
C 7911 6626 0 0 0.00% 0.00%
D 7911 6626 162 162 2.05% 2.44%

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 1 162 123816 710.11 866 852 173.2
A 1 178 64988 370.38 866 852 173.2
A 1 161 57122 324.96 866 852 173.2
B 4 239 232348 1418.39 867 850 163.2
B 0 231 67118 406.02 867 850 163.2
B 4 206 63903 386.33 867 850 163.2
C 13 61 6096 27.54 827 835 191.0
C 14 234 2784 10.2 827 835 191.0
C 3 202 1993 6.06 827 835 191.0
D 1 52 895233 4633.64 814 794 193.0
D 8 195 147479 759.9 814 794 193.0
D 13 122 89695 460.55 814 794 193.0

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