ASTROSAT CZTI

Data Quality Report

Orbit 32774

Creation date: 2024-06-27T20:41:53.287585
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/AS1T04_064T01_9000004730_32774cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32774cztM0_level2_quad_clean.evt
Size (bytes)612,832,32089,150,400
Size584.4 MB 85.0 MB
Events in quadrant A3,908,401593,478
Events in quadrant B3,162,189620,336
Events in quadrant C2,618,784617,890
Events in quadrant D8,530,584514,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147093
B0125432
C0108282
D0288592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50313166.281057%
B5031531.053468%
C5031631.252236%
D5031123324.508050%

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 7033 5032 288 288 4.09% 5.72%
B 7033 5032 29 29 0.41% 0.58%
C 7033 5032 40 40 0.57% 0.79%
D 7033 5032 1461 1461 20.77% 29.03%

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 12 16 826788 6596.75 618 607 125.2
A 15 237 495938 3955.04 618 607 125.2
A 12 194 121828 967.91 618 607 125.2
B 0 219 357233 2997.39 628 615 119.0
B 5 172 61254 509.67 628 615 119.0
B 12 1 56510 469.8 628 615 119.0
C 0 10 126134 911.36 603 610 137.7
C 0 207 51422 368.92 603 610 137.7
C 3 233 22608 159.72 603 610 137.7
D 8 195 4309463 29461.89 567 556 146.3
D 7 80 616933 4214.44 567 556 146.3
D 13 153 307847 2101.08 567 556 146.3

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