ASTROSAT CZTI

Data Quality Report

Orbit 34889

Creation date: 2022-03-12T12:07:06.837958
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_077T01_9000004994_34889cztM0_level2.evt modeM0/AS1T04_077T01_9000004994_34889cztM0_level2_quad_clean.evt
Size (bytes)420,154,56054,645,120
Size400.7 MB 52.1 MB
Events in quadrant A2,545,729324,463
Events in quadrant B2,828,712329,489
Events in quadrant C2,891,472316,778
Events in quadrant D4,088,170302,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110363
B0118042
C0116832
D0159372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A544750.091794%
B5447250.458968%
C5447551.009730%
D5447621.138241%

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 7090 5448 0 0 0.00% 0.00%
B 7090 5448 10 10 0.14% 0.18%
C 7090 5448 50 50 0.71% 0.92%
D 7090 5448 55 55 0.78% 1.01%

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 59434 453.37 640 628 129.7
A 13 6 10625 77.07 640 628 129.7
A 13 254 7936 56.34 640 628 129.7
B 5 172 140875 1144.16 635 619 122.6
B 0 190 103281 837.48 635 619 122.6
B 5 255 22032 174.68 635 619 122.6
C 15 214 247668 1710.25 618 624 144.4
C 0 10 186928 1289.76 618 624 144.4
C 14 67 23291 156.92 618 624 144.4
D 8 195 919777 6118.18 615 599 150.2
D 2 31 279267 1854.85 615 599 150.2
D 1 47 94469 624.81 615 599 150.2

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