ASTROSAT CZTI

Data Quality Report

Orbit 23709

Creation date: 2024-06-27T18:57:45.665040
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/AS1A07_054T01_9000003504_23709cztM0_level2.evt modeM0/AS1A07_054T01_9000003504_23709cztM0_level2_quad_clean.evt
Size (bytes)441,855,360137,738,880
Size421.4 MB 131.4 MB
Events in quadrant A3,056,719934,345
Events in quadrant B3,284,633969,064
Events in quadrant C3,229,499937,732
Events in quadrant D3,385,663894,393

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131631
B0137681
C0135891
D0143481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6261180.287494%
B6261380.606932%
C6261781.245807%
D6260641.022364%

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 7591 6262 0 0 0.00% 0.00%
B 7591 6262 1 1 0.01% 0.02%
C 7591 6262 0 0 0.00% 0.00%
D 7590 6260 32 32 0.42% 0.51%

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 13 254 10104 59.77 792 778 156.0
A 0 226 6920 39.36 792 778 156.0
A 3 137 6455 36.38 792 778 156.0
B 6 36 44593 298.46 806 786 146.8
B 0 229 44236 296.03 806 786 146.8
B 0 189 29533 195.85 806 786 146.8
C 14 238 128268 703.07 788 795 181.3
C 7 247 20029 106.08 788 795 181.3
C 10 9 5831 27.78 788 795 181.3
D 1 52 213271 1141.26 778 758 186.2
D 9 85 124331 663.62 778 758 186.2
D 13 174 62567 331.93 778 758 186.2

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