ASTROSAT CZTI

Data Quality Report

Orbit 17241

Creation date: 2024-06-27T17:34:00.256076
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/AS1T03_063T01_9000002550_17241cztM0_level2.evt modeM0/AS1T03_063T01_9000002550_17241cztM0_level2_quad_clean.evt
Size (bytes)455,840,64094,279,680
Size434.7 MB 89.9 MB
Events in quadrant A3,172,446609,029
Events in quadrant B3,488,303621,042
Events in quadrant C3,301,013589,594
Events in quadrant D3,396,589577,019

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136872
B0145972
C0139362
D0146722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6580580.881459%
B6580941.428571%
C6580741.124620%
D6580951.443769%

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 7635 6581 0 0 0.00% 0.00%
B 7635 6581 9 9 0.12% 0.14%
C 7635 6581 7 7 0.09% 0.11%
D 7635 6581 59 59 0.77% 0.90%

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 23 24319 141.76 817 799 165.9
A 0 226 8509 46.47 817 799 165.9
A 12 194 6035 31.56 817 799 165.9
B 7 220 71162 452.17 821 802 155.6
B 0 189 68234 433.35 821 802 155.6
B 3 209 42857 270.26 821 802 155.6
C 14 238 120937 655.69 783 791 183.2
C 7 220 79417 429.1 783 791 183.2
C 3 233 28914 153.48 783 791 183.2
D 10 70 166794 862.42 784 760 192.5
D 13 189 141656 731.84 784 760 192.5
D 15 0 32841 166.64 784 760 192.5

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