ASTROSAT CZTI

Data Quality Report

Orbit 20935

Creation date: 2024-06-27T18:21:24.982696
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_025T17_9000003084_20935cztM0_level2.evt modeM0/AS1A05_025T17_9000003084_20935cztM0_level2_quad_clean.evt
Size (bytes)195,759,36055,958,400
Size186.7 MB 53.4 MB
Events in quadrant A1,291,179372,200
Events in quadrant B1,474,467370,317
Events in quadrant C1,288,119372,644
Events in quadrant D1,668,371365,072

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060160
B064080
C060210
D069880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A300510.033278%
B300670.232868%
C300610.033267%
D3006240.798403%

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 3005 3005 0 0 0.00% 0.00%
B 3006 3006 6 6 0.20% 0.20%
C 3006 3006 0 0 0.00% 0.00%
D 3006 3006 24 24 0.80% 0.80%

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 0 226 3034 39.25 335 329 68.9
A 3 137 2731 34.86 335 329 68.9
A 12 194 2400 30.05 335 329 68.9
B 0 229 71137 1101.33 330 322 64.3
B 0 190 50449 779.58 330 322 64.3
B 7 220 23078 353.9 330 322 64.3
C 14 238 49338 652.73 317 319 75.1
C 13 61 2216 25.26 317 319 75.1
C 7 247 1568 16.63 317 319 75.1
D 1 20 134840 1689.43 324 314 79.6
D 9 1 125639 1573.88 324 314 79.6
D 1 52 81031 1013.68 324 314 79.6

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