ASTROSAT CZTI

Data Quality Report

Orbit 34194

Creation date: 2022-01-24T12:58:01.054310
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_047T15_9000004882_34194cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34194cztM0_level2_quad_clean.evt
Size (bytes)497,928,96065,600,640
Size474.9 MB 62.6 MB
Events in quadrant A2,508,448413,222
Events in quadrant B4,236,783401,443
Events in quadrant C3,787,624404,156
Events in quadrant D4,174,243382,629

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110582
B0163081
C0148821
D0163701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A549820.036377%
B54984989.057839%
C54981562.837395%
D54981031.873409%

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 7141 5499 0 0 0.00% 0.00%
B 7141 5499 285 285 3.99% 5.18%
C 7141 5499 123 123 1.72% 2.24%
D 7141 5499 67 67 0.94% 1.22%

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 15123 112.15 640 626 129.3
A 13 6 12069 88.52 640 626 129.3
A 13 254 10149 73.67 640 626 129.3
B 5 172 918196 7710.45 618 603 119.0
B 5 31 482847 4052.25 618 603 119.0
B 5 15 232222 1946.27 618 603 119.0
C 0 239 859107 6030.16 611 614 142.4
C 15 214 250108 1752.48 611 614 142.4
C 0 10 221246 1549.75 611 614 142.4
D 8 195 929966 6153.91 614 597 151.0
D 10 118 268960 1776.99 614 597 151.0
D 13 249 149292 984.6 614 597 151.0

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