ASTROSAT CZTI

Data Quality Report

Orbit 16085

Creation date: 2024-06-27T17:17:47.621997
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/AS1T02_110T01_9000002376_16085cztM0_level2.evt modeM0/AS1T02_110T01_9000002376_16085cztM0_level2_quad_clean.evt
Size (bytes)529,752,96096,137,280
Size505.2 MB 91.7 MB
Events in quadrant A3,727,363613,090
Events in quadrant B3,734,956619,040
Events in quadrant C3,426,242594,154
Events in quadrant D4,661,996579,489

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161143
B0159572
C0150052
D0189632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72641662.285242%
B7264751.032489%
C7264811.115088%
D72644145.699339%

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 7640 7266 96 96 1.26% 1.32%
B 7640 7266 8 8 0.10% 0.11%
C 7640 7265 0 0 0.00% 0.00%
D 7640 7266 351 351 4.59% 4.83%

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 12 96 202106 1169.48 852 832 172.1
A 15 174 152174 879.35 852 832 172.1
A 15 239 87060 501.02 852 832 172.1
B 0 189 102547 616.92 862 839 164.9
B 7 220 98837 594.42 862 839 164.9
B 4 216 50024 298.34 862 839 164.9
C 14 238 125554 635.59 830 833 196.2
C 3 233 30242 149.87 830 833 196.2
C 0 207 24230 119.23 830 833 196.2
D 12 218 1291453 6333.54 825 800 203.8
D 7 38 93804 456.39 825 800 203.8
D 12 250 50368 243.24 825 800 203.8

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