ASTROSAT CZTI

Data Quality Report

Orbit 16990

Creation date: 2024-06-27T17:30:20.667050
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/AS1A05_143T01_9000002524_16990cztM0_level2.evt modeM0/AS1A05_143T01_9000002524_16990cztM0_level2_quad_clean.evt
Size (bytes)540,146,880100,362,240
Size515.1 MB 95.7 MB
Events in quadrant A3,308,008652,753
Events in quadrant B4,410,404677,269
Events in quadrant C3,364,334654,229
Events in quadrant D4,849,706616,461

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140412
B0172282
C0139552
D0186812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62921552.463446%
B62922023.210426%
C6292791.255563%
D62923465.499046%

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 7458 6294 105 105 1.41% 1.67%
B 7458 6294 148 148 1.98% 2.35%
C 7458 6294 0 0 0.00% 0.00%
D 7458 6294 257 257 3.45% 4.08%

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 15 174 353959 2284.82 767 750 154.6
A 0 226 6677 38.34 767 750 154.6
A 12 189 6650 38.17 767 750 154.6
B 3 64 1150522 7722.46 785 767 148.9
B 0 229 70448 468.02 785 767 148.9
B 7 220 33483 219.74 785 767 148.9
C 3 233 282896 1584.92 760 768 178.0
C 14 238 118465 661.19 760 768 178.0
C 13 61 5275 25.32 760 768 178.0
D 1 52 1960847 10778.55 743 723 181.9
D 8 195 25681 137.24 743 723 181.9
D 15 145 22754 121.15 743 723 181.9

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