ASTROSAT CZTI

Data Quality Report

Orbit 13585

Creation date: 2024-06-27T16:43:03.276641
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/AS1A04_193T01_9000002004_13585cztM0_level2.evt modeM0/AS1A04_193T01_9000002004_13585cztM0_level2_quad_clean.evt
Size (bytes)1,402,096,320294,704,640
Size1.3 GB 281.1 MB
Events in quadrant A7,519,9212,041,419
Events in quadrant B9,591,5472,025,121
Events in quadrant C7,873,0012,006,812
Events in quadrant D16,354,8961,705,741

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337464
B0394463
C0339533
D0600903

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166151080.650015%
B166157154.303340%
C16615760.457418%
D16615427625.735781%

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 18651 16616 6 6 0.03% 0.04%
B 18651 16616 345 345 1.85% 2.08%
C 18651 16616 11 11 0.06% 0.07%
D 18651 16616 3747 3747 20.09% 22.55%

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 1 162 45331 111.94 1926 1878 388.2
A 2 250 18104 41.8 1926 1878 388.2
A 0 226 17110 39.24 1926 1878 388.2
B 0 182 1422177 3974.4 1903 1851 357.4
B 3 64 210976 585.18 1903 1851 357.4
B 0 214 134531 371.27 1903 1851 357.4
C 3 233 460836 1068.72 1869 1875 429.5
C 0 207 96976 221.45 1869 1875 429.5
C 13 61 13326 26.66 1869 1875 429.5
D 13 122 6980243 17318.76 1674 1620 403.0
D 1 20 2126670 5273.71 1674 1620 403.0
D 5 222 513027 1269.15 1674 1620 403.0

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