ASTROSAT CZTI

Data Quality Report

Orbit 38768

Creation date: 2024-06-27T21:56:10.505590
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_051T01_9000005394_38768cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38768cztM0_level2_quad_clean.evt
Size (bytes)283,512,96084,481,920
Size270.4 MB 80.6 MB
Events in quadrant A2,552,970566,780
Events in quadrant B2,202,666590,986
Events in quadrant C2,621,116555,087
Events in quadrant D2,741,194506,235

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103653
B096882
C0105702
D0112972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A483050.103520%
B483060.124224%
C4830511.055901%
D4830891.842650%

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 6922 4831 6 6 0.09% 0.12%
B 6922 4831 0 0 0.00% 0.00%
C 6922 4831 39 39 0.56% 0.81%
D 6922 4831 74 74 1.07% 1.53%

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 370771 3326.68 550 540 111.3
A 15 223 28610 252.22 550 540 111.3
A 13 248 16062 139.47 550 540 111.3
B 0 230 22907 207.98 552 535 107.6
B 12 111 13064 116.47 552 535 107.6
B 11 111 12344 109.78 552 535 107.6
C 15 214 215789 1689.66 545 549 127.4
C 15 208 122385 956.43 545 549 127.4
C 14 254 98468 768.68 545 549 127.4
D 10 118 197140 1502.6 539 524 130.9
D 2 16 166876 1271.31 539 524 130.9
D 13 249 82541 626.8 539 524 130.9

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