ASTROSAT CZTI

Data Quality Report

Orbit 40841

Creation date: 2024-06-27T22:21:12.071917
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_104T02_9000005572_40841cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40841cztM0_level2_quad_clean.evt
Size (bytes)434,108,16089,153,280
Size414.0 MB 85.0 MB
Events in quadrant A3,331,269609,575
Events in quadrant B2,551,672636,087
Events in quadrant C3,031,463598,841
Events in quadrant D6,713,719458,077

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132393
B0115852
C0125552
D0238732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56741071.885795%
B5674140.246740%
C5674841.480437%
D5674120121.166725%

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 9078 5676 71 71 0.78% 1.25%
B 9078 5676 4 4 0.04% 0.07%
C 9078 5676 72 72 0.79% 1.27%
D 9078 5675 1133 1133 12.48% 19.96%

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 516053 4028.19 623 609 128.0
A 13 248 277538 2164.2 623 609 128.0
A 2 79 62121 480.72 623 609 128.0
B 4 171 61385 503.6 621 603 120.7
B 5 255 37534 305.98 621 603 120.7
B 12 111 15449 123.0 621 603 120.7
C 14 254 324043 2293.37 605 608 141.0
C 15 214 242332 1713.99 605 608 141.0
C 0 10 87682 617.41 605 608 141.0
D 13 249 2135559 15638.63 556 539 136.5
D 12 79 2112782 15471.79 556 539 136.5
D 5 222 198889 1452.88 556 539 136.5

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