ASTROSAT CZTI

Data Quality Report

Orbit 39496

Creation date: 2024-06-27T22:05:19.669119
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/AS1C07_001T02_9000005486_39496cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39496cztM0_level2_quad_clean.evt
Size (bytes)323,729,28089,507,520
Size308.7 MB 85.4 MB
Events in quadrant A3,025,440596,050
Events in quadrant B2,500,813616,790
Events in quadrant C2,932,927580,034
Events in quadrant D3,094,236531,160

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122212
B0114442
C0121282
D0131942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5517150.271887%
B551780.145006%
C5517330.598151%
D5517991.794454%

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 6798 5518 12 12 0.18% 0.22%
B 6798 5518 3 3 0.04% 0.05%
C 6798 5518 30 30 0.44% 0.54%
D 6798 5518 87 87 1.28% 1.58%

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 10 83 458465 3747.78 593 581 122.2
A 6 10 209454 1709.62 593 581 122.2
A 2 79 41739 336.88 593 581 122.2
B 5 255 85141 729.36 592 576 115.9
B 5 172 73873 632.18 592 576 115.9
B 12 111 14406 119.28 592 576 115.9
C 15 208 391423 2893.2 577 581 135.1
C 15 214 232961 1720.19 577 581 135.1
C 3 233 52602 385.08 577 581 135.1
D 12 227 417352 2950.07 574 556 141.3
D 13 249 178519 1259.62 574 556 141.3
D 12 233 160627 1132.98 574 556 141.3

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