ASTROSAT CZTI

Data Quality Report

Orbit 38725

Creation date: 2024-06-27T21:55:38.180710
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/AS1A12_054T01_9000005392_38725cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38725cztM0_level2_quad_clean.evt
Size (bytes)501,926,40079,683,840
Size478.7 MB 76.0 MB
Events in quadrant A2,979,946587,441
Events in quadrant B2,592,696602,155
Events in quadrant C2,501,637569,594
Events in quadrant D10,108,958296,026

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118923
B0111102
C0105282
D0335502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5098531.039623%
B5098531.039623%
C5098110.215771%
D5098273553.648490%

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 7101 5099 25 25 0.35% 0.49%
B 7101 5099 33 33 0.46% 0.65%
C 7101 5099 10 10 0.14% 0.20%
D 7101 5099 2520 2520 35.49% 49.42%

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 392300 3347.99 580 569 117.0
A 9 143 215534 1837.23 580 569 117.0
A 13 248 63699 539.55 580 569 117.0
B 4 171 301882 2706.23 574 558 111.3
B 12 111 13915 119.96 574 558 111.3
B 0 230 13110 112.73 574 558 111.3
C 15 214 212304 1607.67 562 565 131.7
C 15 208 62010 466.53 562 565 131.7
C 14 254 20117 148.45 562 565 131.7
D 2 16 5606375 47693.93 479 466 117.5
D 12 235 1293637 11002.03 479 466 117.5
D 12 227 857072 7287.83 479 466 117.5

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