ASTROSAT CZTI

Data Quality Report

Orbit 20170321_G06_138T03_9000001096_level2

Creation date: 2017-09-23T11:31:26.509191
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/AS1G06_138T03_9000001096cztM0_level2.evt modeM0/AS1G06_138T03_9000001096cztM0_level2_quad_clean.evt
Size (bytes)3,667,006,080675,135,360
Size3.4 GB 643.9 MB
Events in quadrant A24,230,2374,203,301
Events in quadrant B25,177,2774,304,306
Events in quadrant C25,646,7554,284,746
Events in quadrant D32,470,0784,066,778

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010640
B010640
C010640
D010640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01079890
B01096150
C01107350
D01327140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523298181.563187%
B523259431.802198%
C523216011.148678%
D5232726495.062396%

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 59012 52343 3 3 0.01% 0.01%
B 59012 52343 15 15 0.03% 0.03%
C 59012 52342 1 1 0.00% 0.00%
D 59012 52343 1838 1838 3.11% 3.51%

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 15 239 143490 109.59 6213 6081 1253.8
A 0 128 70074 51.04 6213 6081 1253.8
A 0 226 57618 41.1 6213 6081 1253.8
B 5 255 523767 434.11 6257 6093 1192.5
B 11 51 174554 141.27 6257 6093 1192.5
B 12 111 135919 108.87 6257 6093 1192.5
C 8 208 1597283 1124.65 6115 6136 1414.8
C 1 16 116201 77.8 6115 6136 1414.8
C 13 61 46430 28.48 6115 6136 1414.8
D 1 52 5580821 3769.6 5987 5824 1478.9
D 1 83 2166619 1461.05 5987 5824 1478.9
D 2 14 619827 415.17 5987 5824 1478.9

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