ASTROSAT CZTI

Data Quality Report

Orbit 26209

Creation date: 2024-06-27T19:26:08.427738
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/AS1C05_019T04_9000003788_26209cztM0_level2.evt modeM0/AS1C05_019T04_9000003788_26209cztM0_level2_quad_clean.evt
Size (bytes)464,083,200126,676,800
Size442.6 MB 120.8 MB
Events in quadrant A3,860,638842,913
Events in quadrant B3,183,924869,973
Events in quadrant C3,159,234839,642
Events in quadrant D3,407,457828,934

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158580
B0137180
C0136290
D0146960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65241502.299203%
B6525370.567050%
C6525470.720307%
D6525380.582375%

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 7564 6525 113 113 1.49% 1.73%
B 7565 6526 7 7 0.09% 0.11%
C 7565 6526 0 0 0.00% 0.00%
D 7565 6526 17 17 0.22% 0.26%

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 0 13 873959 5613.14 773 757 155.6
A 13 254 11132 66.69 773 757 155.6
A 3 137 6865 39.26 773 757 155.6
B 0 190 52046 350.43 781 762 146.3
B 5 172 35712 238.82 781 762 146.3
B 12 111 17232 112.54 781 762 146.3
C 14 238 119848 668.93 760 766 178.0
C 2 16 42707 235.6 760 766 178.0
C 3 233 23882 129.85 760 766 178.0
D 1 52 294428 1564.26 762 743 187.7
D 7 38 81704 431.23 762 743 187.7
D 12 233 46815 245.39 762 743 187.7

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