ASTROSAT CZTI

Data Quality Report

Orbit 34937

Creation date: 2022-03-15T20:07:08.996687
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_047T01_9000005006_34937cztM0_level2.evt modeM0/AS1A11_047T01_9000005006_34937cztM0_level2_quad_clean.evt
Size (bytes)646,773,12094,656,960
Size616.8 MB 90.3 MB
Events in quadrant A6,703,751598,969
Events in quadrant B4,137,642627,237
Events in quadrant C3,232,926629,864
Events in quadrant D5,094,819577,557

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241743
B0162972
C0132062
D0194572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A619485013.722958%
B61943535.699064%
C6194851.372296%
D61942914.698095%

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 9030 6196 742 742 8.22% 11.98%
B 9029 6195 275 275 3.05% 4.44%
C 9030 6196 74 74 0.82% 1.19%
D 9030 6196 291 291 3.22% 4.70%

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 15 169 4008458 29413.33 678 664 136.3
A 10 83 61087 443.45 678 664 136.3
A 13 254 9995 68.48 678 664 136.3
B 5 172 1095128 8194.74 694 674 133.6
B 0 190 162275 1209.99 694 674 133.6
B 4 232 92732 689.29 694 674 133.6
C 15 214 260470 1612.22 689 694 161.1
C 0 10 214309 1325.73 689 694 161.1
C 14 67 32077 194.77 689 694 161.1
D 8 195 699678 4147.2 681 660 168.6
D 2 31 462125 2737.82 681 660 168.6
D 7 38 402364 2383.27 681 660 168.6

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