ASTROSAT CZTI

Data Quality Report

Orbit 22965

Creation date: 2024-06-27T18:48:04.897438
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/AS1A08_009T01_9000003390_22965cztM0_level2.evt modeM0/AS1A08_009T01_9000003390_22965cztM0_level2_quad_clean.evt
Size (bytes)689,345,280106,076,160
Size657.4 MB 101.2 MB
Events in quadrant A4,017,269671,392
Events in quadrant B4,212,759680,359
Events in quadrant C4,052,163653,114
Events in quadrant D7,996,199594,274

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178491
B0182651
C0179101
D0298351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8823630.714043%
B8824961.087942%
C8824981.110607%
D8824105311.933364%

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 9293 8824 0 0 0.00% 0.00%
B 9294 8825 9 9 0.10% 0.10%
C 9294 8825 0 0 0.00% 0.00%
D 9294 8825 824 824 8.87% 9.34%

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 13 170 30530 141.89 1031 1008 208.1
A 13 254 16357 73.77 1031 1008 208.1
A 0 226 8933 38.09 1031 1008 208.1
B 0 190 99561 503.38 1025 1000 195.8
B 0 189 37195 184.86 1025 1000 195.8
B 4 216 30504 150.69 1025 1000 195.8
C 14 238 154864 668.3 984 990 230.2
C 7 247 31647 133.15 984 990 230.2
C 0 239 14448 58.45 984 990 230.2
D 1 52 3508326 15075.19 948 919 232.7
D 13 172 407615 1748.02 948 919 232.7
D 13 153 163230 697.63 948 919 232.7

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