ASTROSAT CZTI

Data Quality Report

Orbit 20170124_G06_102T01_9000000978_level2

Creation date: 2017-09-22T22:39:24.736627
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_102T01_9000000978cztM0_level2.evt modeM0/AS1G06_102T01_9000000978cztM0_level2_quad_clean.evt
Size (bytes)3,313,615,680550,512,000
Size3.1 GB 525.0 MB
Events in quadrant A22,374,8893,412,649
Events in quadrant B22,200,8983,511,473
Events in quadrant C20,859,0713,450,094
Events in quadrant D31,871,7083,199,243

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09260
B09240
C09240
D09260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0974430
B0966730
C0941020
D01246740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A451575181.147109%
B451554470.989924%
C451593250.719679%
D4515823175.130874%

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 74180 45187 115 115 0.16% 0.25%
B 74181 45185 30 30 0.04% 0.07%
C 74181 45188 84 84 0.11% 0.19%
D 74181 45190 2003 2003 2.70% 4.43%

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 1261311 1185.6 5259 5148 1059.5
A 14 238 739744 693.33 5259 5148 1059.5
A 14 111 96873 86.57 5259 5148 1059.5
B 0 214 531209 531.39 5316 5195 989.9
B 0 219 319521 317.54 5316 5195 989.9
B 15 204 210118 207.02 5316 5195 989.9
C 4 254 690927 584.38 5110 5124 1173.5
C 9 68 193621 160.62 5110 5124 1173.5
C 13 61 39763 29.52 5110 5124 1173.5
D 12 221 3697199 3035.68 5017 4863 1216.3
D 2 216 3365182 2762.71 5017 4863 1216.3
D 12 233 2702063 2217.52 5017 4863 1216.3

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