ASTROSAT CZTI

Data Quality Report

Orbit 20161209_G06_164T01_9000000866_level2

Creation date: 2017-09-21T12:20:25.384370
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_164T01_9000000866cztM0_level2.evt modeM0/AS1G06_164T01_9000000866cztM0_level2_quad_clean.evt
Size (bytes)1,867,308,480411,730,560
Size1.7 GB 392.7 MB
Events in quadrant A13,289,9432,669,522
Events in quadrant B13,715,1742,642,144
Events in quadrant C12,408,1622,620,477
Events in quadrant D15,193,8292,562,172

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0602220
B0609430
C0587300
D0640800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05820
B05820
C05820
D05820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A287587692.674039%
B287588132.827039%
C287585051.756033%
D287587272.527992%

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 30228 28765 44 44 0.15% 0.15%
B 30228 28765 72 72 0.24% 0.25%
C 30228 28765 0 0 0.00% 0.00%
D 30228 28765 124 124 0.41% 0.43%

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 338389 505.48 3271 3199 663.1
A 15 234 101477 148.21 3271 3199 663.1
A 15 174 98326 143.46 3271 3199 663.1
B 0 219 275801 439.41 3277 3193 620.4
B 0 214 189246 299.9 3277 3193 620.4
B 3 220 136435 214.77 3277 3193 620.4
C 12 4 25611 31.0 3161 3168 724.0
C 13 61 25186 30.41 3161 3168 724.0
C 7 247 18250 20.83 3161 3168 724.0
D 8 195 1270881 1656.55 3167 3062 765.3
D 2 152 880818 1146.89 3167 3062 765.3
D 2 63 264321 341.36 3167 3062 765.3

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