ASTROSAT CZTI

Data Quality Report

Orbit 35260

Creation date: 2022-04-06T12:53:08.267452
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_047T09_9000005054_35260cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35260cztM0_level2_quad_clean.evt
Size (bytes)598,417,92056,514,240
Size570.7 MB 53.9 MB
Events in quadrant A2,788,043367,048
Events in quadrant B6,537,841334,058
Events in quadrant C3,277,076359,053
Events in quadrant D5,160,668278,148

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113143
B0231492
C0127032
D0187412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A531480.150546%
B5314121622.882951%
C53141492.803914%
D531491117.143395%

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 7227 5315 1 1 0.01% 0.02%
B 7227 5315 786 786 10.88% 14.79%
C 7227 5315 123 123 1.70% 2.31%
D 7227 5315 668 668 9.24% 12.57%

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 97681 705.1 688 677 137.6
A 13 6 11343 77.53 688 677 137.6
A 7 191 9700 65.59 688 677 137.6
B 5 236 3486715 29203.39 632 618 119.4
B 5 172 352949 2951.51 632 618 119.4
B 3 112 96054 799.48 632 618 119.4
C 0 10 235902 1564.55 650 654 150.4
C 15 214 224552 1489.07 650 654 150.4
C 10 49 178684 1184.02 650 654 150.4
D 12 235 1384326 9585.46 593 578 144.4
D 7 80 795140 5504.07 593 578 144.4
D 7 223 187581 1295.4 593 578 144.4

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