ASTROSAT CZTI

Data Quality Report

Orbit 20160128_G02_021T11_9000000300_level2

Creation date: 2017-10-26T22:49:47.267659
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/AS1G02_021T11_9000000300cztM0_level2.evt modeM0/AS1G02_021T11_9000000300cztM0_level2_quad_clean.evt
Size (bytes)3,202,274,880283,492,800
Size3.0 GB 270.4 MB
Events in quadrant A25,203,2201,779,459
Events in quadrant B24,831,1091,835,050
Events in quadrant C22,871,2251,813,329
Events in quadrant D22,721,5961,746,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0894820
B0883440
C0826110
D0822100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B140
C140
D110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04120
B04120
C04120
D04120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A205051120.546208%
B205071120.546155%
C20508630.307197%
D205102161.053145%

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 25274 20516 966 966 3.82% 4.71%
B 25274 20518 670 670 2.65% 3.27%
C 25274 20518 513 513 2.03% 2.50%
D 25274 20519 812 812 3.21% 3.96%

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 15 236 1044652 687.22 6318 6367 1510.8
A 10 2 16914 6.98 6318 6367 1510.8
A -1 -1 -1 -1.0 6318 6367 1510.8
B 0 220 42735 23.67 6544 6595 1527.1
B 0 228 16836 6.71 6544 6595 1527.1
B 11 111 14307 5.05 6544 6595 1527.1
C 10 34 30336 15.05 5848 6056 1612.8
C 7 159 28594 13.97 5848 6056 1612.8
C -1 -1 -1 -1.0 5848 6056 1612.8
D 1 83 755985 424.86 5723 5943 1765.4
D 7 34 470429 263.1 5723 5943 1765.4
D 14 3 55616 28.14 5723 5943 1765.4

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