ASTROSAT CZTI

Data Quality Report

Orbit 20170819_A03_095T03_9000001474_level2

Creation date: 2017-10-30T17:03:54.015009
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/AS1A03_095T03_9000001474cztM0_level2.evt modeM0/AS1A03_095T03_9000001474cztM0_level2_quad_clean.evt
Size (bytes)2,274,672,960397,929,600
Size2.1 GB 379.5 MB
Events in quadrant A14,728,4082,518,239
Events in quadrant B15,975,4212,516,808
Events in quadrant C13,909,5932,523,069
Events in quadrant D22,167,0512,347,601

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0667620
B0690470
C0648610
D0870770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04240
B04240
C04240
D04240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A320421440.449410%
B319493361.051676%
C32042490.152924%
D318359172.880477%

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 34666 32285 17 17 0.05% 0.05%
B 34666 32221 147 147 0.42% 0.46%
C 34665 32284 0 0 0.00% 0.00%
D 34666 32042 782 782 2.26% 2.44%

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 452693 604.34 3671 3594 743.1
A 15 174 111444 145.13 3671 3594 743.1
A 0 226 33467 40.2 3671 3594 743.1
B 4 239 535149 768.93 3669 3581 691.3
B 0 214 275285 393.03 3669 3581 691.3
B 11 51 253352 361.3 3669 3581 691.3
C 13 61 27035 28.67 3553 3565 818.5
C 0 207 21695 22.15 3553 3565 818.5
C 14 67 18215 17.9 3553 3565 818.5
D 1 52 5495232 6597.24 3477 3380 832.4
D 8 195 1940516 2327.04 3477 3380 832.4
D 13 104 314452 373.68 3477 3380 832.4

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