ASTROSAT CZTI

Data Quality Report

Orbit 20191214_T03_168T01_9000003368_level2

Creation date: 2019-12-17T11:02:24.588084
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/AS1T03_168T01_9000003368cztM0_level2_bc.evt modeM0/AS1T03_168T01_9000003368cztM0_level2_quad_clean.evt
Size (bytes)5,177,136,9602,848,397,760
Size4.8 GB 2.7 GB
Events in quadrant A30,865,07119,675,029
Events in quadrant B32,464,13819,849,885
Events in quadrant C30,480,41518,935,092
Events in quadrant D53,373,52218,159,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028640
B028640
C028640
D028640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02290
B02290
C02290
D02290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02930160
B02983260
C02983840
D03736930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14114313390.948683%
B14114316731.185323%
C14114325231.787549%
D14114365924.670441%

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 163533 141148 0 0 0.00% 0.00%
B 163533 141143 15 15 0.01% 0.01%
C 163533 141146 89 89 0.05% 0.06%
D 163533 141131 1188 1188 0.73% 0.84%

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 13 254 252517 143.42 7915 7814 1706.3
A 10 17 195125 109.78 7915 7814 1706.3
A 0 226 51927 25.85 7915 7814 1706.3
B 0 230 556597 371.2 7940 7792 1478.5
B 0 228 422652 280.6 7940 7792 1478.5
B 0 190 278612 183.18 7940 7792 1478.5
C 10 22 1260768 706.31 7555 7579 1774.3
C 2 16 117467 61.93 7555 7579 1774.3
C 13 61 43747 20.38 7555 7579 1774.3
D 1 52 19140759 10698.41 7618 7387 1788.4
D 12 227 1023886 568.37 7618 7387 1788.4
D 2 152 973881 540.41 7618 7387 1788.4

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