ASTROSAT CZTI

Data Quality Report

Orbit 13681

Creation date: 2024-06-27T16:44:28.030477
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/AS1G08_070T01_9000002028_13681cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13681cztM0_level2_quad_clean.evt
Size (bytes)545,313,60089,602,560
Size520.1 MB 85.5 MB
Events in quadrant A3,538,692563,645
Events in quadrant B4,191,574595,258
Events in quadrant C3,764,102537,960
Events in quadrant D4,529,656512,660

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149683
B0167252
C0153922
D0181042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72381341.851340%
B72382603.592153%
C72381071.478309%
D72381702.348715%

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 7819 7241 0 0 0.00% 0.00%
B 7819 7241 67 67 0.86% 0.93%
C 7819 7241 2 2 0.03% 0.03%
D 7819 7241 44 44 0.56% 0.61%

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 1 162 14990 76.11 912 892 185.2
A 15 69 10229 50.41 912 892 185.2
A 0 226 7961 38.16 912 892 185.2
B 8 250 340292 1945.23 912 893 174.5
B 3 64 124096 706.13 912 893 174.5
B 0 219 85648 485.76 912 893 174.5
C 3 233 315529 1544.08 880 884 203.8
C 14 234 17868 83.35 880 884 203.8
C 13 61 6407 27.1 880 884 203.8
D 13 122 552285 2374.54 869 853 232.2
D 1 52 251049 1077.38 869 853 232.2
D 8 195 206356 884.92 869 853 232.2

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