ASTROSAT CZTI

Data Quality Report

Orbit 17484

Creation date: 2024-06-27T17:37:16.784706
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_051T01_9000002588_17484cztM0_level2.evt modeM0/AS1T03_051T01_9000002588_17484cztM0_level2_quad_clean.evt
Size (bytes)461,543,04084,288,960
Size440.2 MB 80.4 MB
Events in quadrant A3,033,900548,784
Events in quadrant B3,253,300556,801
Events in quadrant C3,111,131535,072
Events in quadrant D4,190,610511,008

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122951
B0130131
C0125361
D0161941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5732641.116539%
B5733951.657073%
C5732921.605024%
D57322935.111654%

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 7027 5733 1 1 0.01% 0.02%
B 7028 5734 18 18 0.26% 0.31%
C 7027 5732 0 0 0.00% 0.00%
D 7027 5733 190 190 2.70% 3.31%

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 15 174 17209 105.22 783 767 156.3
A 0 226 7049 40.2 783 767 156.3
A 12 194 5819 32.33 783 767 156.3
B 7 220 84542 580.21 771 754 144.4
B 0 197 45466 309.62 771 754 144.4
B 4 216 28302 190.76 771 754 144.4
C 14 238 116530 661.11 754 761 175.1
C 5 218 25697 142.4 754 761 175.1
C 3 233 19312 105.94 754 761 175.1
D 13 189 436627 2423.38 753 732 179.9
D 7 238 412890 2291.42 753 732 179.9
D 10 70 200515 1110.71 753 732 179.9

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