ASTROSAT CZTI

Data Quality Report

Orbit 14759

Creation date: 2024-06-27T16:59:21.484971
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_022T06_9000002182_14759cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14759cztM0_level2_quad_clean.evt
Size (bytes)102,597,12026,631,360
Size97.8 MB 25.4 MB
Events in quadrant A1,048,708177,516
Events in quadrant B681,043180,815
Events in quadrant C698,978176,400
Events in quadrant D588,035174,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05529
B05630
C05731
D05024

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087804751
B055702800
C056972932
D056763049

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02016
B01411
C01511
D01412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128390.701481%
B1286151.166407%
C128810.077640%
D129140.309837%

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 1306 1301 2 2 0.15% 0.15%
B 1306 1303 6 6 0.46% 0.46%
C 1306 1304 1 1 0.08% 0.08%
D 1306 1305 2 2 0.15% 0.15%

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 427872 12690.22 159 155 33.7
A 12 189 8953 261.03 159 155 33.7
A 0 226 1442 38.18 159 155 33.7
B 10 16 41767 1290.17 158 154 32.3
B 0 214 13573 416.04 158 154 32.3
B 0 205 7972 242.39 158 154 32.3
C 3 233 95688 2608.97 151 152 36.6
C 4 254 12866 347.2 151 152 36.6
C 13 61 1049 24.5 151 152 36.6
D 2 120 6601 172.67 151 148 37.4
D 2 234 4366 112.87 151 148 37.4
D 3 238 2267 56.7 151 148 37.4

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