ASTROSAT CZTI

Data Quality Report

Orbit 41464

Creation date: 2024-06-27T22:29:24.887960
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/AS1C06_010T05_9000005670_41464cztM0_level2.fits modeM0/AS1C06_010T05_9000005670_41464cztM0_level2_quad_clean.evt
Size (bytes)314,930,88086,509,440
Size300.3 MB 82.5 MB
Events in quadrant A2,781,792578,460
Events in quadrant B2,519,547594,718
Events in quadrant C2,729,560554,551
Events in quadrant D3,206,011513,600

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114222
B0114841
C0117201
D0134131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5399220.407483%
B5399100.185219%
C53991092.018892%
D5399851.574366%

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 5400 15 15 0.22% 0.28%
B 6922 5400 2 2 0.03% 0.04%
C 6922 5400 109 109 1.57% 2.02%
D 6922 5400 74 74 1.07% 1.37%

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 492425 4166.63 574 563 118.0
A 13 248 60933 511.4 574 563 118.0
A 2 79 10137 81.1 574 563 118.0
B 0 190 135231 1217.05 569 553 110.7
B 5 255 124555 1120.57 569 553 110.7
B 12 111 13906 120.67 569 553 110.7
C 0 10 315865 2478.88 548 550 127.2
C 15 214 224125 1757.66 548 550 127.2
C 15 111 26281 202.29 548 550 127.2
D 1 47 266377 1955.1 553 536 136.0
D 13 249 229105 1680.98 553 536 136.0
D 5 222 156207 1144.86 553 536 136.0

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