ASTROSAT CZTI

Data Quality Report

Orbit 08498

Creation date: 2024-06-27T15:33:32.011216
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/AS1G07_060T01_9000001200_08498cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08498cztM0_level2_quad_clean.evt
Size (bytes)428,466,24070,292,160
Size408.6 MB 67.0 MB
Events in quadrant A3,095,426422,127
Events in quadrant B3,153,896425,461
Events in quadrant C2,998,588418,852
Events in quadrant D3,283,477405,996

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136075
B0136162
C0134962
D0139145

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65311271.944572%
B65321472.250459%
C6532911.393141%
D6531831.270862%

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 7502 6532 10 10 0.13% 0.15%
B 7502 6532 4 4 0.05% 0.06%
C 7502 6532 0 0 0.00% 0.00%
D 7502 6533 1 1 0.01% 0.02%

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 5 16 39762 239.98 794 778 162.4
A 0 226 7240 39.78 794 778 162.4
A 12 194 6794 37.03 794 778 162.4
B 0 214 37200 237.26 797 777 153.5
B 12 111 17286 107.54 797 777 153.5
B 11 111 13585 83.43 797 777 153.5
C 13 61 5802 28.07 768 770 179.2
C 8 222 3126 13.14 768 770 179.2
C 3 202 1926 6.45 768 770 179.2
D 1 52 308137 1638.68 760 741 187.6
D 8 195 51139 268.66 760 741 187.6
D 2 234 19334 99.12 760 741 187.6

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