ASTROSAT CZTI

Data Quality Report

Orbit 48151

Creation date: 2024-08-24T10:32:39.830834
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/AS1C09_009T01_9000006406_48151cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48151cztM0_level2_quad_clean.evt
Size (bytes)1,143,097,920242,504,640
Size1.1 GB 231.3 MB
Events in quadrant A19,092,1382,071,630
Events in quadrant B3,212,442130,720
Events in quadrant C8,340,8212,039,184
Events in quadrant D10,227,9541,826,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06947049
B0197036
C03812915
D04377924

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183336313.441881%
B1834618346100.000000%
C183411440.785126%
D183374782.606751%

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 19820 18348 24 24 0.12% 0.13%
B 19820 18281 1 1 0.01% 0.01%
C 19820 18350 23 23 0.12% 0.13%
D 19821 18347 214 214 1.08% 1.17%

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 10832778 24883.99 2073 2032 435.2
A 13 248 98534 221.72 2073 2032 435.2
A 0 31 69999 156.16 2073 2032 435.2
B 2 177 2531022 84974.27 135 132 29.8
B 4 21 101173 3392.44 135 132 29.8
B 4 171 30411 1016.61 135 132 29.8
C 14 254 178192 361.65 2050 2068 487.0
C 12 2 88237 176.94 2050 2068 487.0
C 1 3 51175 100.84 2050 2068 487.0
D 2 165 1220507 2357.66 2040 1979 516.8
D 2 37 305519 587.3 2040 1979 516.8
D 11 192 216661 415.37 2040 1979 516.8

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