ASTROSAT CZTI

Data Quality Report

Orbit 34591

Creation date: 2022-02-20T09:23:29.475420
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/AS1C07_014T01_9000004950_34591cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34591cztM0_level2_quad_clean.evt
Size (bytes)713,882,88075,240,000
Size680.8 MB 71.8 MB
Events in quadrant A3,296,990482,006
Events in quadrant B5,251,477465,009
Events in quadrant C3,532,630477,893
Events in quadrant D9,093,583393,179

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137603
B0197792
C0143192
D0316712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6598160.242498%
B659866310.048500%
C6598100.151561%
D6598142921.658078%

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 9765 6600 7 7 0.07% 0.11%
B 9765 6600 460 460 4.71% 6.97%
C 9765 6600 3 3 0.03% 0.05%
D 9765 6599 1251 1251 12.81% 18.96%

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 9 143 79576 473.34 816 801 166.4
A 10 83 46398 273.98 816 801 166.4
A 4 48 12901 72.7 816 801 166.4
B 5 172 1773381 11901.83 778 760 148.9
B 5 255 246899 1652.64 778 760 148.9
B 0 189 49433 326.8 778 760 148.9
C 15 214 284744 1526.53 793 801 186.0
C 3 233 56794 301.03 793 801 186.0
C 14 67 49488 261.75 793 801 186.0
D 8 195 3667655 18703.61 729 717 196.1
D 2 249 1787828 9115.35 729 717 196.1
D 1 52 239455 1217.71 729 717 196.1

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