ASTROSAT CZTI

Data Quality Report

Orbit 25499

Creation date: 2024-06-27T19:18:21.117203
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_003T17_9000003720_25499cztM0_level2.evt modeM0/AS1A08_003T17_9000003720_25499cztM0_level2_quad_clean.evt
Size (bytes)471,090,24090,080,640
Size449.3 MB 85.9 MB
Events in quadrant A3,153,591578,150
Events in quadrant B3,316,697583,884
Events in quadrant C3,207,261555,047
Events in quadrant D4,132,387541,628

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136850
B0140950
C0137520
D0167790

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6727240.356771%
B6727320.475695%
C6727420.624350%
D6727570.847332%

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 7657 6728 0 0 0.00% 0.00%
B 7657 6728 3 3 0.04% 0.04%
C 7657 6728 0 0 0.00% 0.00%
D 7657 6728 40 40 0.52% 0.59%

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 10364 57.92 816 799 165.2
A 3 137 7723 41.93 816 799 165.2
A 0 226 7039 37.78 816 799 165.2
B 5 235 81511 517.49 813 792 156.0
B 12 111 19308 118.71 813 792 156.0
B 11 111 17313 105.92 813 792 156.0
C 14 238 125115 673.31 783 788 184.6
C 5 112 15181 77.95 783 788 184.6
C 3 233 7829 38.13 783 788 184.6
D 1 52 987846 5107.66 788 763 193.3
D 8 195 126324 649.71 788 763 193.3
D 2 234 27958 140.72 788 763 193.3

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