ASTROSAT CZTI

Data Quality Report

Orbit 26361

Creation date: 2024-06-27T19:28:11.173831
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/AS1A09_088T01_9000003812_26361cztM0_level2.evt modeM0/AS1A09_088T01_9000003812_26361cztM0_level2_quad_clean.evt
Size (bytes)265,057,92033,059,520
Size252.8 MB 31.5 MB
Events in quadrant A1,246,654213,889
Events in quadrant B1,266,897219,478
Events in quadrant C1,383,192208,271
Events in quadrant D3,958,585178,790

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052570
B052750
C056110
D0135110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2508321.275917%
B2508512.033493%
C2508873.468900%
D250894437.639553%

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 3413 2509 0 0 0.00% 0.00%
B 3413 2509 0 0 0.00% 0.00%
C 3413 2509 2 2 0.06% 0.08%
D 3413 2509 723 723 21.18% 28.82%

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 0 13 4234 59.58 321 313 65.8
A 13 254 4060 56.93 321 313 65.8
A 3 137 3072 41.92 321 313 65.8
B 12 111 7698 117.06 322 313 63.1
B 11 111 6796 102.76 322 313 63.1
B 14 111 5908 88.69 322 313 63.1
C 3 233 91809 1224.05 313 313 74.7
C 14 238 49093 652.58 313 313 74.7
C 4 254 22880 301.9 313 313 74.7
D 7 80 2749247 43280.95 262 255 63.5
D 1 52 192636 3028.9 262 255 63.5
D 2 234 8540 130.44 262 255 63.5

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