ASTROSAT CZTI

Data Quality Report

Orbit 34301

Creation date: 2022-02-01T10:14:28.435472
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_086T01_9000004890_34301cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34301cztM0_level2_quad_clean.evt
Size (bytes)2,073,360,960358,928,640
Size1.9 GB 342.3 MB
Events in quadrant A11,616,6372,302,188
Events in quadrant B16,017,8422,300,129
Events in quadrant C13,021,2282,352,888
Events in quadrant D20,452,8962,197,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510376
B0635825
C0533485
D0781445

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05080
B05080
C05080
D05080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24998480.192015%
B2499810034.012321%
C249981350.540043%
D2499810644.256341%

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 38527 25003 16 16 0.04% 0.06%
B 38527 25003 672 672 1.74% 2.69%
C 38527 25003 87 87 0.23% 0.35%
D 38527 25003 909 909 2.36% 3.64%

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 7 16 165582 285.1 2880 2819 570.9
A 9 143 145994 250.79 2880 2819 570.9
A 10 83 85739 145.24 2880 2819 570.9
B 5 172 2926453 5522.77 2823 2748 529.4
B 4 251 631712 1188.09 2823 2748 529.4
B 0 189 335019 627.65 2823 2748 529.4
C 15 214 1056309 1628.0 2830 2857 647.1
C 14 254 297826 455.84 2830 2857 647.1
C 0 10 200427 305.32 2830 2857 647.1
D 12 235 3063517 4079.06 2786 2732 750.4
D 8 195 2975281 3961.47 2786 2732 750.4
D 7 223 1742448 2318.49 2786 2732 750.4

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