ASTROSAT CZTI

Data Quality Report

Orbit 13881

Creation date: 2024-06-27T16:47:18.561298
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_010T01_9000002046_13881cztM0_level2.evt modeM0/AS1A04_010T01_9000002046_13881cztM0_level2_quad_clean.evt
Size (bytes)442,071,36090,495,360
Size421.6 MB 86.3 MB
Events in quadrant A3,056,701582,425
Events in quadrant B3,171,013591,948
Events in quadrant C3,077,240582,290
Events in quadrant D3,659,452548,659

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130513
B0133462
C0130502
D0149632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6238300.480923%
B6238500.801539%
C6238120.192369%
D6238951.522924%

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 7529 6239 1 1 0.01% 0.02%
B 7529 6239 2 2 0.03% 0.03%
C 7529 6239 0 0 0.00% 0.00%
D 7529 6239 67 67 0.89% 1.07%

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 23 17837 106.33 785 769 160.5
A 1 162 10737 62.1 785 769 160.5
A 0 226 7993 45.0 785 769 160.5
B 0 214 27684 180.8 787 770 148.9
B 3 209 24102 156.74 787 770 148.9
B 12 111 17087 109.61 787 770 148.9
C 3 233 94396 526.7 765 772 177.8
C 13 61 5325 25.61 765 772 177.8
C 3 202 1759 5.55 765 772 177.8
D 1 52 230652 1289.39 750 735 178.3
D 2 136 101571 565.5 750 735 178.3
D 5 222 98133 546.22 750 735 178.3

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