ASTROSAT CZTI

Data Quality Report

Orbit 13227

Creation date: 2024-06-27T16:38:05.050856
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_216T01_9000001968_13227cztM0_level2.evt modeM0/AS1A04_216T01_9000001968_13227cztM0_level2_quad_clean.evt
Size (bytes)487,212,480103,083,840
Size464.6 MB 98.3 MB
Events in quadrant A3,001,828702,723
Events in quadrant B5,160,266643,885
Events in quadrant C2,901,878692,868
Events in quadrant D3,271,492650,651

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131522
B0194141
C0128801
D0139761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6185450.727567%
B618590314.599838%
C6185170.274859%
D6185971.568310%

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 7401 6187 4 4 0.05% 0.06%
B 7401 6187 652 652 8.81% 10.54%
C 7401 6187 3 3 0.04% 0.05%
D 7401 6187 62 62 0.84% 1.00%

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 15 239 41520 268.68 754 740 151.8
A 4 2 29054 186.55 754 740 151.8
A 12 96 11034 67.82 754 740 151.8
B 4 239 2094560 15843.03 703 687 132.2
B 3 64 207457 1564.5 703 687 132.2
B 0 219 36141 268.26 703 687 132.2
C 15 208 63414 373.25 727 731 167.9
C 13 61 5372 27.64 727 731 167.9
C 8 222 3409 15.95 727 731 167.9
D 1 52 481414 2807.43 713 692 171.2
D 8 195 65259 377.07 713 692 171.2
D 2 234 24642 139.87 713 692 171.2

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