ASTROSAT CZTI

Data Quality Report

Orbit 26270

Creation date: 2024-06-27T19:26:50.221296
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/AS1A09_079T03_9000003790_26270cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26270cztM0_level2_quad_clean.evt
Size (bytes)489,254,400103,262,400
Size466.6 MB 98.5 MB
Events in quadrant A3,348,512672,010
Events in quadrant B3,316,633699,558
Events in quadrant C4,598,842658,955
Events in quadrant D3,133,923665,665

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140760
B0139430
C0178440
D0135110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6173610.988174%
B6173600.971975%
C61735679.185161%
D6173320.518387%

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 7433 6174 19 19 0.26% 0.31%
B 7433 6174 2 2 0.03% 0.03%
C 7433 6174 305 305 4.10% 4.94%
D 7433 6174 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 0 13 194298 1178.52 817 803 164.2
A 13 254 11328 64.1 817 803 164.2
A 3 137 7080 38.23 817 803 164.2
B 7 219 26621 168.29 825 806 153.4
B 5 172 20020 125.26 825 806 153.4
B 0 230 17716 110.24 825 806 153.4
C 4 254 1289041 7127.79 781 788 180.7
C 14 238 125830 691.85 781 788 180.7
C 3 233 81154 444.66 781 788 180.7
D 2 234 30583 156.34 805 788 190.6
D 11 176 23402 118.66 805 788 190.6
D 1 52 13656 67.52 805 788 190.6

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