ASTROSAT CZTI

Data Quality Report

Orbit 33956

Creation date: 2024-06-27T20:54:41.591230
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_074T01_9000004852_33956cztM0_level2.evt modeM0/AS1T04_074T01_9000004852_33956cztM0_level2_quad_clean.evt
Size (bytes)502,427,52052,594,560
Size479.2 MB 50.2 MB
Events in quadrant A2,639,372314,628
Events in quadrant B3,390,038313,283
Events in quadrant C3,204,017307,783
Events in quadrant D5,612,721274,219

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111743
B0135102
C0125102
D0203782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546130.054935%
B54611572.874931%
C5461751.373375%
D546160010.986999%

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 7255 5462 2 2 0.03% 0.04%
B 7255 5462 93 93 1.28% 1.70%
C 7255 5462 55 55 0.76% 1.01%
D 7255 5462 526 526 7.25% 9.63%

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 15 169 26124 189.72 670 659 134.2
A 10 83 14550 103.49 670 659 134.2
A 13 6 12395 87.43 670 659 134.2
B 5 172 545860 4307.11 663 648 126.6
B 0 219 86895 681.34 663 648 126.6
B 0 229 47876 373.1 663 648 126.6
C 15 214 237220 1587.02 645 650 149.1
C 0 10 232090 1552.6 645 650 149.1
C 3 233 196924 1316.7 645 650 149.1
D 8 195 1203800 7865.02 618 602 153.0
D 12 6 565799 3694.56 618 602 153.0
D 12 233 328720 2144.83 618 602 153.0

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