ASTROSAT CZTI

Data Quality Report

Orbit 41160

Creation date: 2024-06-27T22:25:14.972162
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/AS1A12_037T01_9000005608_41160cztM0_level2.fits modeM0/AS1A12_037T01_9000005608_41160cztM0_level2_quad_clean.evt
Size (bytes)447,978,24091,042,560
Size427.2 MB 86.8 MB
Events in quadrant A2,958,503632,844
Events in quadrant B3,706,899627,740
Events in quadrant C4,837,491536,193
Events in quadrant D4,637,901562,046

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122793
B0149492
C0180992
D0178202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5687110.193424%
B56872253.956392%
C568780614.172675%
D56871342.356251%

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 7150 5688 2 2 0.03% 0.04%
B 7150 5688 180 180 2.52% 3.16%
C 7150 5687 662 662 9.26% 11.64%
D 7150 5688 111 111 1.55% 1.95%

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 535533 4147.78 626 613 129.0
A 13 254 9519 69.06 626 613 129.0
A 3 137 7121 50.46 626 613 129.0
B 0 245 1074283 8960.1 612 595 119.8
B 5 255 175362 1458.46 612 595 119.8
B 12 111 15047 120.6 612 595 119.8
C 9 54 2066910 15688.3 565 568 131.7
C 15 214 227851 1725.6 565 568 131.7
C 0 10 181119 1370.8 565 568 131.7
D 2 16 1842092 12390.05 603 586 148.6
D 13 249 279050 1873.56 603 586 148.6
D 2 249 155824 1044.47 603 586 148.6

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