ASTROSAT CZTI

Data Quality Report

Orbit 39521

Creation date: 2024-06-27T22:05:38.550637
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_018T01_9000005488_39521cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39521cztM0_level2_quad_clean.evt
Size (bytes)293,414,40087,834,240
Size279.8 MB 83.8 MB
Events in quadrant A2,678,571585,616
Events in quadrant B2,246,372605,502
Events in quadrant C2,874,873579,405
Events in quadrant D2,657,396526,252

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113433
B0105912
C0117762
D0119192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5179190.366866%
B5179120.231705%
C5179400.772350%
D51791072.066036%

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 7272 5180 16 16 0.22% 0.31%
B 7272 5180 5 5 0.07% 0.10%
C 7272 5180 40 40 0.55% 0.77%
D 7272 5180 76 76 1.05% 1.47%

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 420639 3765.56 548 540 111.6
A 6 10 93167 830.26 548 540 111.6
A 15 222 24050 210.73 548 540 111.6
B 5 255 92444 866.98 549 534 106.0
B 12 111 13158 119.08 549 534 106.0
B 11 111 12038 108.51 549 534 106.0
C 9 187 384607 3081.19 535 541 124.6
C 15 214 217699 1742.16 535 541 124.6
C 15 208 163538 1307.65 535 541 124.6
D 2 249 232486 1823.06 526 512 127.2
D 13 171 133427 1044.56 526 512 127.2
D 12 227 114510 895.9 526 512 127.2

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