ASTROSAT CZTI

Data Quality Report

Orbit 17954

Creation date: 2024-06-27T17:43:04.668135
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/AS1T03_025T01_9000002670_17954cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17954cztM0_level2_quad_clean.evt
Size (bytes)560,566,080135,878,400
Size534.6 MB 129.6 MB
Events in quadrant A3,875,986890,099
Events in quadrant B3,980,409911,821
Events in quadrant C4,138,240871,895
Events in quadrant D4,406,413852,770

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174422
B0175362
C0180152
D0191222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84751031.215339%
B84761481.746107%
C84751431.687316%
D84751892.230088%

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 9080 8477 0 0 0.00% 0.00%
B 9081 8478 1 1 0.01% 0.01%
C 9080 8477 11 11 0.12% 0.13%
D 9080 8477 123 123 1.35% 1.45%

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 15 174 24234 114.3 1002 979 203.5
A 0 226 8620 37.56 1002 979 203.5
A 3 137 8015 34.58 1002 979 203.5
B 12 111 23792 118.44 1011 984 192.6
B 11 111 20537 101.54 1011 984 192.6
B 14 111 17038 83.37 1011 984 192.6
C 9 54 173670 755.16 972 976 228.7
C 14 238 148704 645.99 972 976 228.7
C 3 233 20260 84.32 972 976 228.7
D 2 165 364588 1534.17 971 940 237.0
D 10 70 188915 793.03 971 940 237.0
D 5 222 60457 251.09 971 940 237.0

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