ASTROSAT CZTI

Data Quality Report

Orbit 20161226_G06_068T01_9000000930_level2

Creation date: 2017-09-22T16:22:59.793113
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_068T01_9000000930cztM0_level2.evt modeM0/AS1G06_068T01_9000000930cztM0_level2_quad_clean.evt
Size (bytes)719,821,440139,216,320
Size686.5 MB 132.8 MB
Events in quadrant A4,962,261905,595
Events in quadrant B4,686,420913,607
Events in quadrant C4,448,642895,566
Events in quadrant D7,059,600843,738

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211580
B0204370
C0197460
D0275690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94881641.728499%
B94881071.127740%
C9488700.737774%
D94888238.674115%

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 11888 9490 23 23 0.19% 0.24%
B 11888 9490 0 0 0.00% 0.00%
C 11888 9490 0 0 0.00% 0.00%
D 11888 9490 627 627 5.27% 6.61%

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 15 234 286639 1235.24 1149 1125 231.1
A 4 2 108476 464.44 1149 1125 231.1
A 13 251 91217 389.77 1149 1125 231.1
B 0 214 47991 212.53 1162 1136 220.5
B 4 48 40890 180.32 1162 1136 220.5
B 4 81 23990 103.66 1162 1136 220.5
C 9 247 32533 121.0 1123 1133 259.5
C 12 4 19227 69.72 1123 1133 259.5
C 9 16 12665 44.44 1123 1133 259.5
D 2 33 2053583 7825.41 1082 1051 262.3
D 8 195 406391 1545.38 1082 1051 262.3
D 2 152 168030 636.62 1082 1051 262.3

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