ASTROSAT CZTI

Data Quality Report

Orbit 20180306_T02_012T07_9000001958_level2

Creation date: 2018-07-03T14:15:35.961230
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/AS1T02_012T07_9000001958cztM0_level2_bc.evt modeM0/AS1T02_012T07_9000001958cztM0_level2_quad_clean.evt
Size (bytes)1,002,113,280287,124,480
Size955.7 MB 273.8 MB
Events in quadrant A5,496,3431,838,926
Events in quadrant B8,303,7521,706,743
Events in quadrant C4,954,5481,838,451
Events in quadrant D9,974,1361,680,291

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502110
B0649340
C0488780
D0705190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04800
B04800
C04800
D04800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A237022080.877563%
B23702249110.509662%
C237021430.603325%
D2370218617.851658%

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 28608 23704 0 0 0.00% 0.00%
B 28608 23646 321 321 1.12% 1.36%
C 28608 23706 12 12 0.04% 0.05%
D 28608 23704 71 71 0.25% 0.30%

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 12 189 280902 1034.44 1247 1221 270.4
A 8 15 223191 820.99 1247 1221 270.4
A 8 192 114290 418.2 1247 1221 270.4
B 4 239 3157994 14005.55 1195 1167 225.4
B 3 64 120289 528.5 1195 1167 225.4
B 0 219 117849 517.67 1195 1167 225.4
C 15 208 124616 453.61 1233 1218 272.0
C 13 61 7635 23.59 1233 1218 272.0
C 0 207 4981 13.83 1233 1218 272.0
D 13 122 3609424 13219.18 1190 1152 273.0
D 1 52 978688 3581.28 1190 1152 273.0
D 10 157 377768 1379.76 1190 1152 273.0

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