ASTROSAT CZTI

Data Quality Report

Orbit 19741

Creation date: 2024-06-27T18:06:23.079690
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/AS1C04_001T01_9000002948_19741cztM0_level2.evt modeM0/AS1C04_001T01_9000002948_19741cztM0_level2_quad_clean.evt
Size (bytes)468,008,640124,922,880
Size446.3 MB 119.1 MB
Events in quadrant A2,985,138836,208
Events in quadrant B3,252,344864,789
Events in quadrant C3,484,012843,554
Events in quadrant D4,027,978802,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131492
B0139122
C0147222
D0164862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6243150.240269%
B6244681.089045%
C6243971.553740%
D62431812.899247%

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 7483 6244 0 0 0.00% 0.00%
B 7484 6245 8 8 0.11% 0.13%
C 7483 6244 8 8 0.11% 0.13%
D 7483 6244 138 138 1.84% 2.21%

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 11 29 18132 113.42 765 749 153.3
A 0 226 6875 39.97 765 749 153.3
A 3 1 6838 39.73 765 749 153.3
B 0 197 54533 375.68 777 759 143.1
B 7 220 40271 276.04 777 759 143.1
B 0 190 38966 266.92 777 759 143.1
C 3 233 374722 2143.26 757 763 174.5
C 14 238 120291 685.05 757 763 174.5
C 7 247 21092 116.51 757 763 174.5
D 1 52 784915 4370.8 751 730 179.4
D 13 172 152960 848.48 751 730 179.4
D 9 1 93867 519.12 751 730 179.4

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