ASTROSAT CZTI

Data Quality Report

Orbit 35909

Creation date: 2022-06-09T00:33:57.503662
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_080T01_9000005146_35909cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35909cztM0_level2_quad_clean.evt
Size (bytes)501,056,64079,836,480
Size477.8 MB 76.1 MB
Events in quadrant A2,824,915528,410
Events in quadrant B4,993,207487,497
Events in quadrant C3,007,259518,512
Events in quadrant D3,967,637489,544

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119013
B0184902
C0123262
D0155112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5619230.409326%
B561967111.941627%
C5619711.263570%
D56191392.473750%

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 7353 5620 15 15 0.20% 0.27%
B 7353 5620 478 478 6.50% 8.51%
C 7353 5620 63 63 0.86% 1.12%
D 7353 5620 113 113 1.54% 2.01%

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 10 83 168162 1252.4 658 648 133.8
A 9 143 57345 423.89 658 648 133.8
A 15 169 47371 349.32 658 648 133.8
B 5 172 2170329 18184.3 623 608 119.3
B 5 63 199542 1667.25 623 608 119.3
B 5 255 145096 1210.95 623 608 119.3
C 0 10 242932 1647.85 631 637 147.0
C 15 214 239422 1623.98 631 637 147.0
C 9 69 63394 426.81 631 637 147.0
D 7 223 572964 3706.38 627 611 154.4
D 8 195 326196 2108.39 627 611 154.4
D 13 249 260630 1683.8 627 611 154.4

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