ASTROSAT CZTI

Data Quality Report

Orbit 13495

Creation date: 2024-06-27T16:41:40.856398
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/AS1A04_103T01_9000001988_13495cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13495cztM0_level2_quad_clean.evt
Size (bytes)522,659,520106,182,720
Size498.4 MB 101.3 MB
Events in quadrant A3,827,689667,858
Events in quadrant B4,031,531681,187
Events in quadrant C3,787,658666,934
Events in quadrant D3,632,587637,714

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169723
B0173802
C0167332
D0167282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8086660.816226%
B80861131.397477%
C8086470.581252%
D8086210.259708%

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 8727 8089 0 0 0.00% 0.00%
B 8727 8088 18 18 0.21% 0.22%
C 8727 8089 0 0 0.00% 0.00%
D 8727 8089 11 11 0.13% 0.14%

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 15 95496 475.32 963 940 198.9
A 1 162 18569 88.62 963 940 198.9
A 0 226 8537 38.19 963 940 198.9
B 3 64 69644 368.61 967 940 186.4
B 10 245 68812 364.15 967 940 186.4
B 10 244 55091 290.53 967 940 186.4
C 3 233 117987 535.44 937 940 218.6
C 0 207 12827 54.38 937 940 218.6
C 13 61 6840 26.99 937 940 218.6
D 13 249 55309 242.9 926 898 224.0
D 8 195 44045 192.62 926 898 224.0
D 2 234 31560 136.88 926 898 224.0

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