ASTROSAT CZTI

Data Quality Report

Orbit 34369

Creation date: 2022-02-05T08:55:58.766805
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/AS1A05_019T01_9000004906_34369cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34369cztM0_level2_quad_clean.evt
Size (bytes)784,601,28068,653,440
Size748.3 MB 65.5 MB
Events in quadrant A3,041,761443,072
Events in quadrant B4,561,841435,838
Events in quadrant C5,908,891409,531
Events in quadrant D9,809,220334,795

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132573
B0178762
C0219452
D0337522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6512130.199631%
B65123144.821867%
C65126429.858722%
D6512239836.824324%

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 9408 6514 5 5 0.05% 0.08%
B 9408 6514 193 193 2.05% 2.96%
C 9408 6514 544 544 5.78% 8.35%
D 9408 6513 2188 2188 23.26% 33.59%

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 43004 272.03 764 745 155.3
A 10 83 34286 215.91 764 745 155.3
A 13 254 11111 66.73 764 745 155.3
B 5 172 760841 5281.07 747 727 143.9
B 0 229 249281 1726.89 747 727 143.9
B 4 171 213748 1480.01 747 727 143.9
C 4 254 2674604 15914.7 718 722 168.0
C 15 214 267335 1586.85 718 722 168.0
C 14 67 61093 359.32 718 722 168.0
D 7 223 2730451 16122.02 620 608 169.3
D 12 235 2120646 12520.61 620 608 169.3
D 8 195 956114 5643.07 620 608 169.3

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