ASTROSAT CZTI

Data Quality Report

Orbit 21556

Creation date: 2024-06-27T18:29:14.153593
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_166T01_9000003192_21556cztM0_level2.evt modeM0/AS1A05_166T01_9000003192_21556cztM0_level2_quad_clean.evt
Size (bytes)594,440,640105,065,280
Size566.9 MB 100.2 MB
Events in quadrant A3,303,932690,528
Events in quadrant B3,708,254694,981
Events in quadrant C3,421,285682,898
Events in quadrant D7,101,310632,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142261
B0151951
C0146161
D0260221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6911851.229923%
B69111021.475908%
C69111001.446969%
D69106689.667149%

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 7366 6912 0 0 0.00% 0.00%
B 7366 6912 6 6 0.08% 0.09%
C 7366 6912 0 0 0.00% 0.00%
D 7365 6911 537 537 7.29% 7.77%

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 13 254 11727 63.17 854 837 172.4
A 4 2 9969 52.97 854 837 172.4
A 0 226 7369 37.89 854 837 172.4
B 0 189 118288 731.42 847 825 160.6
B 0 230 95334 588.49 847 825 160.6
B 0 228 64937 399.21 847 825 160.6
C 14 238 129759 676.78 816 819 190.5
C 3 233 110864 577.6 816 819 190.5
C 13 61 5829 26.3 816 819 190.5
D 1 52 3306282 16937.25 806 782 195.2
D 14 35 262829 1342.72 806 782 195.2
D 2 136 262041 1338.68 806 782 195.2

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