ASTROSAT CZTI

Data Quality Report

Orbit 20170803_G07_005T01_9000001430_level2

Creation date: 2017-09-24T13:53:17.914535
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/AS1G07_005T01_9000001430cztM0_level2.evt modeM0/AS1G07_005T01_9000001430cztM0_level2_quad_clean.evt
Size (bytes)1,409,423,040225,783,360
Size1.3 GB 215.3 MB
Events in quadrant A9,756,5411,381,817
Events in quadrant B10,264,9061,422,473
Events in quadrant C8,693,6041,373,683
Events in quadrant D12,657,4461,322,479

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420450
B0434930
C0395530
D0507180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194262301.183980%
B194184972.559481%
C194251490.767053%
D194047203.710575%

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 22788 19447 7 7 0.03% 0.04%
B 22788 19440 206 206 0.90% 1.06%
C 22788 19447 0 0 0.00% 0.00%
D 22787 19430 497 497 2.18% 2.56%

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 8 15 910045 1961.53 2279 2223 462.8
A 15 174 38531 78.45 2279 2223 462.8
A 14 111 27943 55.57 2279 2223 462.8
B 4 239 917318 2109.58 2278 2220 433.8
B 0 214 96213 216.68 2278 2220 433.8
B 10 247 90437 203.37 2278 2220 433.8
C 13 61 16788 28.25 2227 2238 515.0
C 8 222 8758 12.66 2227 2238 515.0
C 14 67 6662 8.59 2227 2238 515.0
D 12 233 1410247 2520.2 2191 2133 558.7
D 1 52 1001162 1788.03 2191 2133 558.7
D 8 195 867445 1548.71 2191 2133 558.7

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