ASTROSAT CZTI

Data Quality Report

Orbit 08975

Creation date: 2024-06-27T15:39:39.457775
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_019T01_9000001244_08975cztM0_level2.evt modeM0/AS1G07_019T01_9000001244_08975cztM0_level2_quad_clean.evt
Size (bytes)145,203,84029,044,800
Size138.5 MB 27.7 MB
Events in quadrant A999,865191,803
Events in quadrant B1,285,102190,099
Events in quadrant C927,039186,256
Events in quadrant D1,063,169181,750

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040001
B048741
C038171
D042031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1759191.080159%
B17591116.310404%
C1759130.739056%
D1759854.832291%

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 1759 1759 1 1 0.06% 0.06%
B 1759 1759 88 88 5.00% 5.00%
C 1759 1759 5 5 0.28% 0.28%
D 1759 1759 52 52 2.96% 2.96%

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 8 5 60057 1225.08 236 231 48.8
A 13 251 17481 353.23 236 231 48.8
A 5 16 12017 241.35 236 231 48.8
B 0 85 369658 8117.5 228 223 45.5
B 0 214 23735 516.62 228 223 45.5
B 12 111 4490 93.76 228 223 45.5
C 4 254 59106 1130.17 220 220 52.1
C 8 128 4847 88.8 220 220 52.1
C 8 112 2483 43.43 220 220 52.1
D 1 52 203288 3428.21 218 212 59.2
D 7 71 14037 233.39 218 212 59.2
D 13 29 7832 128.64 218 212 59.2

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