ASTROSAT CZTI

Data Quality Report

Orbit 20200111_A08_003T05_9000003426_level2

Creation date: 2020-01-15T16:40:27.882965
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A08_003T05_9000003426cztM0_level2_bc.evt modeM0/AS1A08_003T05_9000003426cztM0_level2_quad_clean.evt
Size (bytes)2,154,821,760510,569,280
Size2.0 GB 486.9 MB
Events in quadrant A16,876,6893,089,630
Events in quadrant B9,549,7243,246,226
Events in quadrant C11,045,9013,113,429
Events in quadrant D24,758,2932,962,147

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01156470
B0937470
C0996690
D01507840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09080
B09080
C09080
D09080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4444933257.480483%
B444496721.511845%
C4444912342.776215%
D44449540812.166753%

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 49724 44447 1664 1664 3.35% 3.74%
B 49724 44449 7 7 0.01% 0.02%
C 49724 44448 34 34 0.07% 0.08%
D 49724 44445 900 900 1.81% 2.02%

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 6 16 8048054 16137.46 2285 2240 498.6
A 13 254 59232 114.31 2285 2240 498.6
A 0 226 14534 24.66 2285 2240 498.6
B 0 190 174136 384.95 2363 2299 446.4
B 0 245 114967 252.4 2363 2299 446.4
B 0 229 66652 144.16 2363 2299 446.4
C 0 10 1357783 2555.39 2260 2246 530.5
C 7 247 363023 680.12 2260 2246 530.5
C 10 9 324333 607.18 2260 2246 530.5
D 7 238 6766410 12945.04 2218 2132 522.5
D 1 52 5443353 10413.06 2218 2132 522.5
D 12 233 2488391 4758.04 2218 2132 522.5

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