ASTROSAT CZTI

Data Quality Report

Orbit 20161224_A02_075T05_9000000920_level2

Creation date: 2017-09-22T15:27:42.050249
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/AS1A02_075T05_9000000920cztM0_level2.evt modeM0/AS1A02_075T05_9000000920cztM0_level2_quad_clean.evt
Size (bytes)692,516,160106,125,120
Size660.4 MB 101.2 MB
Events in quadrant A5,787,120629,309
Events in quadrant B4,520,653650,813
Events in quadrant C4,206,199640,328
Events in quadrant D5,801,223620,509

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238820
B0201280
C0197840
D0241300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97016226.411710%
B97012172.236883%
C97011581.628698%
D97012432.504896%

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 10507 9705 205 205 1.95% 2.11%
B 10507 9705 3 3 0.03% 0.03%
C 10507 9705 0 0 0.00% 0.00%
D 10507 9705 40 40 0.38% 0.41%

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 14 111 1369100 6138.94 1088 1064 222.8
A 4 2 164863 735.03 1088 1064 222.8
A 8 15 39706 173.4 1088 1064 222.8
B 0 214 100750 462.81 1112 1083 215.4
B 11 51 50437 229.18 1112 1083 215.4
B 12 111 21541 95.0 1112 1083 215.4
C 10 22 9254 32.56 1073 1075 251.2
C 13 61 8387 29.11 1073 1075 251.2
C 9 247 7038 23.74 1073 1075 251.2
D 8 195 1261661 4819.08 1073 1037 261.6
D 2 33 315604 1202.52 1073 1037 261.6
D 10 172 77588 292.64 1073 1037 261.6

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