ASTROSAT CZTI

Data Quality Report

Orbit 20170704_G07_069T01_9000001356_level2

Creation date: 2017-09-24T09:02:18.488347
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/AS1G07_069T01_9000001356cztM0_level2.evt modeM0/AS1G07_069T01_9000001356cztM0_level2_quad_clean.evt
Size (bytes)4,752,109,440946,543,680
Size4.4 GB 902.7 MB
Events in quadrant A34,877,1156,044,640
Events in quadrant B34,770,4916,024,727
Events in quadrant C31,522,6436,035,567
Events in quadrant D38,097,9725,841,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014140
B014100
C014100
D013980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01130
C01140
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01496050
B01498520
C01412260
D01599070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6889110381.506728%
B688589541.385460%
C689085490.796714%
D6876111591.685548%

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 86216 70283 19 19 0.02% 0.03%
B 86216 70242 93 93 0.11% 0.13%
C 86216 70274 10 10 0.01% 0.01%
D 86216 70208 521 521 0.60% 0.74%

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 1 162 1394451 840.73 8268 8091 1649.0
A 1 178 576442 344.66 8268 8091 1649.0
A 1 161 562813 336.4 8268 8091 1649.0
B 4 80 860270 555.63 8242 8044 1533.8
B 0 214 729515 470.38 8242 8044 1533.8
B 0 187 303764 192.8 8242 8044 1533.8
C 13 61 60235 28.24 8066 8095 1846.1
C 14 234 55479 25.67 8066 8095 1846.1
C 9 68 27198 10.35 8066 8095 1846.1
D 1 52 2302799 1171.02 8001 7824 1959.8
D 12 227 1394994 707.81 8001 7824 1959.8
D 13 122 1052504 533.05 8001 7824 1959.8

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