ASTROSAT CZTI

Data Quality Report

Orbit 20170615_G07_027T01_9000001304_level2

Creation date: 2017-09-24T05:15:44.026701
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_027T01_9000001304cztM0_level2.evt modeM0/AS1G07_027T01_9000001304cztM0_level2_quad_clean.evt
Size (bytes)774,489,600145,157,760
Size738.6 MB 138.4 MB
Events in quadrant A7,867,968918,560
Events in quadrant B4,873,815961,055
Events in quadrant C4,622,917940,231
Events in quadrant D5,440,205909,832

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297620
B0205810
C0199280
D0224820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02000
C01960
D02020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94103373.581296%
B96651431.479565%
C96581161.201077%
D96572412.495599%

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 17661 9791 103 103 0.58% 1.05%
B 17707 10079 6 6 0.03% 0.06%
C 17684 10087 2 2 0.01% 0.02%
D 17680 10058 93 93 0.53% 0.92%

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 5 2987540 12627.24 1160 1137 236.5
A 4 2 223546 940.4 1160 1137 236.5
A 5 16 63688 264.48 1160 1137 236.5
B 0 214 85096 361.93 1208 1179 231.9
B 0 245 30634 127.04 1208 1179 231.9
B 0 230 29546 122.35 1208 1179 231.9
C 14 234 21114 73.24 1176 1186 272.1
C 13 61 8785 27.93 1176 1186 272.1
C 14 67 7213 22.15 1176 1186 272.1
D 1 52 582996 1849.48 1157 1135 314.6
D 12 233 220577 697.51 1157 1135 314.6
D 2 136 109583 344.71 1157 1135 314.6

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