ASTROSAT CZTI

Data Quality Report

Orbit 11873

Creation date: 2024-06-27T16:19:27.987265
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_145T01_9000001756_11873cztM0_level2.evt modeM0/AS1A04_145T01_9000001756_11873cztM0_level2_quad_clean.evt
Size (bytes)417,746,88066,957,120
Size398.4 MB 63.9 MB
Events in quadrant A2,444,739431,376
Events in quadrant B3,050,012424,556
Events in quadrant C2,285,677429,538
Events in quadrant D4,532,727392,981

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106611
B0123370
C0103520
D0168130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49692765.554438%
B49694529.096398%
C49691643.300463%
D496951510.364258%

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 4970 4970 5 5 0.10% 0.10%
B 4970 4970 108 108 2.17% 2.17%
C 4970 4970 0 0 0.00% 0.00%
D 4970 4970 318 318 6.40% 6.40%

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 1 162 59233 484.48 586 572 121.1
A 1 178 30751 249.25 586 572 121.1
A 1 161 26985 218.14 586 572 121.1
B 4 239 584893 5178.59 584 567 112.8
B 15 204 73463 646.04 584 567 112.8
B 0 85 32939 286.9 584 567 112.8
C 8 128 7449 50.74 581 581 135.4
C 8 112 4670 30.21 581 581 135.4
C 13 61 4248 27.09 581 581 135.4
D 13 122 1403452 10260.43 562 543 136.7
D 1 52 550680 4023.53 562 543 136.7
D 8 195 279391 2039.41 562 543 136.7

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