ASTROSAT CZTI

Data Quality Report

Orbit 35419

Creation date: 2022-09-12T19:41:00.453798
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/AS1T05_022T01_9000005070_35419cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35419cztM0_level2_quad_clean.evt
Size (bytes)571,887,36084,386,880
Size545.4 MB 80.5 MB
Events in quadrant A2,572,408571,650
Events in quadrant B7,955,298515,441
Events in quadrant C3,013,695563,242
Events in quadrant D3,418,284532,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110692
B0273422
C0120192
D0135922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A531150.094144%
B5311208439.239315%
C53111382.598381%
D53111913.596310%

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 7075 5312 1 1 0.01% 0.02%
B 7075 5312 1776 1776 25.10% 33.43%
C 7075 5312 101 101 1.43% 1.90%
D 7075 5312 146 146 2.06% 2.75%

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 126534 990.08 626 614 127.2
A 13 6 17390 131.91 626 614 127.2
A 9 143 8149 59.25 626 614 127.2
B 4 251 1538720 15362.86 524 511 100.1
B 5 31 1104765 11028.73 524 511 100.1
B 5 15 1097194 10953.12 524 511 100.1
C 0 10 394530 2731.45 613 618 144.2
C 15 214 215973 1493.31 613 618 144.2
C 0 207 8846 57.05 613 618 144.2
D 7 80 268705 1798.23 606 592 149.1
D 13 249 215444 1441.01 606 592 149.1
D 2 153 163667 1093.74 606 592 149.1

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