ASTROSAT CZTI

Data Quality Report

Orbit 12765

Creation date: 2024-06-27T16:32:22.629535
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/AS1A04_112T01_9000001884_12765cztM0_level2.evt modeM0/AS1A04_112T01_9000001884_12765cztM0_level2_quad_clean.evt
Size (bytes)529,323,840127,572,480
Size504.8 MB 121.7 MB
Events in quadrant A3,214,204893,491
Events in quadrant B4,940,672845,157
Events in quadrant C3,375,080864,241
Events in quadrant D4,077,928825,766

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134782
B0187751
C0142641
D0162391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6236711.138550%
B623674211.898653%
C62361061.699808%
D62362514.025016%

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 7492 6237 0 0 0.00% 0.00%
B 7492 6237 518 518 6.91% 8.31%
C 7492 6237 39 39 0.52% 0.63%
D 7492 6237 160 160 2.14% 2.57%

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 12 189 108258 680.33 791 778 158.0
A 8 6 26460 162.56 791 778 158.0
A 15 239 16776 101.26 791 778 158.0
B 4 239 1708492 12418.59 744 727 137.5
B 0 85 199707 1446.95 744 727 137.5
B 3 64 27985 198.22 744 727 137.5
C 15 208 432955 2551.93 746 751 169.4
C 12 4 28219 162.18 746 751 169.4
C 14 234 7457 39.59 746 751 169.4
D 1 52 702294 3924.57 746 724 178.8
D 8 195 267579 1492.78 746 724 178.8
D 13 104 79770 442.18 746 724 178.8

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