ASTROSAT CZTI

Data Quality Report

Orbit 35018

Creation date: 2022-06-11T12:39:34.882016
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_010T01_9000005016_35018cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35018cztM0_level2_quad_clean.evt
Size (bytes)403,096,32089,873,280
Size384.4 MB 85.7 MB
Events in quadrant A2,377,094606,187
Events in quadrant B3,233,997615,016
Events in quadrant C2,723,857595,810
Events in quadrant D3,536,538557,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102083
B0127582
C0108772
D0138852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495190.181781%
B49511913.857807%
C4951891.797617%
D49511513.049889%

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 6984 4952 3 3 0.04% 0.06%
B 6984 4952 138 138 1.98% 2.79%
C 6984 4952 84 84 1.20% 1.70%
D 6984 4952 147 147 2.10% 2.97%

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 73275 612.04 588 579 118.8
A 15 223 23070 189.35 588 579 118.8
A 13 254 8419 66.01 588 579 118.8
B 5 31 468379 4193.18 584 571 111.6
B 5 15 180633 1613.98 584 571 111.6
B 5 172 160164 1430.51 584 571 111.6
C 0 10 250893 1891.7 571 577 132.3
C 15 214 208559 1571.77 571 577 132.3
C 14 67 16957 123.79 571 577 132.3
D 8 195 708350 5167.67 564 551 137.0
D 13 249 221363 1612.16 564 551 137.0
D 10 118 151660 1103.25 564 551 137.0

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