ASTROSAT CZTI

Data Quality Report

Orbit 09947

Creation date: 2024-06-27T15:52:48.006398
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/AS1G07_016T01_9000001420_09947cztM0_level2.evt modeM0/AS1G07_016T01_9000001420_09947cztM0_level2_quad_clean.evt
Size (bytes)493,312,32077,716,800
Size470.5 MB 74.1 MB
Events in quadrant A3,240,895469,927
Events in quadrant B3,403,526477,165
Events in quadrant C3,196,513476,671
Events in quadrant D4,610,460428,713

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147883
B0150272
C0147522
D0188352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7196350.486381%
B7196761.056142%
C7196410.569761%
D71964556.322957%

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 7681 7196 0 0 0.00% 0.00%
B 7681 7196 6 6 0.08% 0.08%
C 7681 7196 0 0 0.00% 0.00%
D 7681 7196 381 381 4.96% 5.29%

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 22290 126.26 831 813 170.1
A 8 15 8598 45.77 831 813 170.1
A 0 226 7707 40.53 831 813 170.1
B 4 239 36843 221.54 841 822 162.6
B 0 214 21569 127.6 841 822 162.6
B 4 81 20205 119.21 841 822 162.6
C 13 61 6225 28.32 815 819 190.9
C 7 247 5898 26.61 815 819 190.9
C 14 67 5359 23.79 815 819 190.9
D 10 253 907176 4442.32 777 756 204.0
D 1 52 306549 1498.68 777 756 204.0
D 2 152 170170 830.29 777 756 204.0

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