ASTROSAT CZTI

Data Quality Report

Orbit 24926

Creation date: 2024-06-27T19:11:32.281633
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_205T01_9000003652_24926cztM0_level2.evt modeM0/AS1T03_205T01_9000003652_24926cztM0_level2_quad_clean.evt
Size (bytes)502,352,640141,503,040
Size479.1 MB 134.9 MB
Events in quadrant A3,161,969974,514
Events in quadrant B3,343,353998,354
Events in quadrant C4,639,127946,888
Events in quadrant D3,652,687937,235

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129952
B0135772
C0176582
D0146952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6143200.325574%
B6143440.716262%
C61432734.444083%
D6142270.439596%

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 7508 6144 0 0 0.00% 0.00%
B 7508 6144 1 1 0.01% 0.02%
C 7508 6144 7 7 0.09% 0.11%
D 7507 6143 13 13 0.17% 0.21%

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 9700 55.18 819 807 161.2
A 0 226 6965 38.21 819 807 161.2
A 3 137 6769 36.99 819 807 161.2
B 0 230 61322 405.16 819 801 149.4
B 15 33 19621 125.99 819 801 149.4
B 0 190 17272 110.27 819 801 149.4
C 7 247 1377982 7557.37 800 806 182.2
C 14 238 131045 714.7 800 806 182.2
C 13 61 5487 25.69 800 806 182.2
D 1 52 315541 1631.29 813 792 192.9
D 8 195 176064 908.4 813 792 192.9
D 1 239 47216 240.61 813 792 192.9

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