ASTROSAT CZTI

Data Quality Report

Orbit 36171

Creation date: 2022-06-07T13:47:07.188831
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/AS1A11_059T08_9000005160_36171cztM0_level2.evt modeM0/AS1A11_059T08_9000005160_36171cztM0_level2_quad_clean.evt
Size (bytes)468,066,24090,008,640
Size446.4 MB 85.8 MB
Events in quadrant A2,690,294595,878
Events in quadrant B3,359,607624,856
Events in quadrant C3,980,215575,944
Events in quadrant D3,777,766550,155

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114783
B0133832
C0151462
D0148842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5407110.203440%
B54071442.663214%
C54073175.862770%
D54073526.510080%

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 7170 5408 2 2 0.03% 0.04%
B 7170 5408 79 79 1.10% 1.46%
C 7170 5408 277 277 3.86% 5.12%
D 7170 5408 303 303 4.23% 5.60%

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 175171 1369.5 638 627 127.5
A 8 144 23553 179.88 638 627 127.5
A 9 143 15830 119.28 638 627 127.5
B 4 171 347841 2826.11 640 622 122.9
B 5 172 344069 2795.41 640 622 122.9
B 0 190 67280 542.55 640 622 122.9
C 15 208 862844 5933.45 615 618 145.3
C 0 10 383212 2632.84 615 618 145.3
C 15 214 239302 1642.52 615 618 145.3
D 13 249 663292 4509.6 606 591 147.0
D 12 6 304007 2064.71 606 591 147.0
D 7 38 131041 887.7 606 591 147.0

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