ASTROSAT CZTI

Data Quality Report

Orbit 20151127_P01_161T05_9000000180_level2

Creation date: 2017-10-31T13:35:30.471249
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/AS1P01_161T05_9000000180cztM0_level2.evt modeM0/AS1P01_161T05_9000000180cztM0_level2_quad_clean.evt
Size (bytes)7,701,762,240491,647,680
Size7.2 GB 468.9 MB
Events in quadrant A51,462,9973,117,161
Events in quadrant B69,883,0272,850,809
Events in quadrant C56,487,2243,087,478
Events in quadrant D52,610,3912,899,197

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01832060
B02387230
C01981030
D01869740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08700
B08700
C08700
D08700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A427361900.444590%
B42736544812.748034%
C427362660.622426%
D4273616993.975571%

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 47326 42745 1733 1733 3.66% 4.05%
B 47326 42744 9757 9757 20.62% 22.83%
C 47326 42745 2652 2652 5.60% 6.20%
D 47326 42745 3531 3531 7.46% 8.26%

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 15 127 517467 158.48 13206 13306 3181.1
A 14 170 160134 46.16 13206 13306 3181.1
A 15 233 119248 33.3 13206 13306 3181.1
B 3 0 18222490 6040.65 12941 13031 3014.5
B 0 87 569612 184.64 12941 13031 3014.5
B 0 220 513965 166.18 12941 13031 3014.5
C 9 83 6719337 1914.9 12577 13029 3502.2
C 9 54 217575 58.41 12577 13029 3502.2
C 3 111 174545 46.12 12577 13029 3502.2
D 13 73 2440361 690.82 12311 12527 3514.4
D 12 188 2176023 615.6 12311 12527 3514.4
D 1 4 471124 130.49 12311 12527 3514.4

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