ASTROSAT CZTI

Data Quality Report

Orbit 20160220_T01_072T01_9000000338_level2

Creation date: 2017-10-31T15:53:33.943478
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/AS1T01_072T01_9000000338cztM0_level2.evt modeM0/AS1T01_072T01_9000000338cztM0_level2_quad_clean.evt
Size (bytes)6,004,336,3201,203,972,480
Size5.6 GB 1.1 GB
Events in quadrant A41,710,4727,396,664
Events in quadrant B43,729,4537,564,625
Events in quadrant C47,608,3037,467,149
Events in quadrant D42,117,0007,268,881

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B1260
C1260
D110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019760
B019760
C019760
D019760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02029090
B02048070
C02178690
D02086590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A988016200.627524%
B987977010.709536%
C9879713391.355304%
D988017130.721653%

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 114892 98811 72 72 0.06% 0.07%
B 114892 98809 168 168 0.15% 0.17%
C 114892 98808 1021 1021 0.89% 1.03%
D 114892 98810 533 533 0.46% 0.54%

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 5 396372 185.26 10699 10548 2082.6
A 0 1 136358 60.41 10699 10548 2082.6
A 15 191 75826 31.34 10699 10548 2082.6
B 4 48 409674 199.99 11081 10874 1994.1
B 6 36 403134 196.71 11081 10874 1994.1
B 5 68 243436 116.63 11081 10874 1994.1
C 9 85 4349898 1909.63 10424 10491 2272.4
C 2 53 1779658 778.55 10424 10491 2272.4
C 10 82 419657 180.06 10424 10491 2272.4
D 10 215 1236523 530.85 10299 10079 2310.4
D 2 152 694270 296.14 10299 10079 2310.4
D 2 31 339540 142.6 10299 10079 2310.4

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