ASTROSAT CZTI

Data Quality Report

Orbit 47910

Creation date: 2024-08-07T10:50:30.815657
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/AS1A13_074T02_9000006378_47910cztM0_level2.fits modeM0/AS1A13_074T02_9000006378_47910cztM0_level2_quad_clean.evt
Size (bytes)450,146,880109,411,200
Size429.3 MB 104.3 MB
Events in quadrant A6,714,667704,904
Events in quadrant B2,970,264760,743
Events in quadrant C2,937,721738,486
Events in quadrant D3,549,353667,847

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241752
B0131312
C0131172
D0148712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63233144.965997%
B6323410.648426%
C6323190.300490%
D6323841.328483%

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 7563 6324 133 133 1.76% 2.10%
B 7563 6324 0 0 0.00% 0.00%
C 7563 6324 3 3 0.04% 0.05%
D 7563 6324 56 56 0.74% 0.89%

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 10 83 3772634 25702.51 709 696 146.8
A 13 248 192667 1308.12 709 696 146.8
A 13 6 8628 54.05 709 696 146.8
B 0 200 54315 381.81 724 702 140.4
B 12 111 17544 119.94 724 702 140.4
B 0 198 17440 119.2 724 702 140.4
C 12 2 89185 521.78 728 732 169.5
C 14 254 9142 49.61 728 732 169.5
C 13 61 4779 23.87 728 732 169.5
D 2 249 297029 1669.68 717 696 177.5
D 14 34 136786 766.79 717 696 177.5
D 2 165 104332 583.93 717 696 177.5

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