ASTROSAT CZTI

Data Quality Report

Orbit 39622

Creation date: 2024-06-27T22:06:56.387900
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_39622cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39622cztM0_level2_quad_clean.evt
Size (bytes)403,436,16086,414,400
Size384.7 MB 82.4 MB
Events in quadrant A2,703,744600,157
Events in quadrant B2,547,907609,494
Events in quadrant C4,593,808565,037
Events in quadrant D4,701,612493,005

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110973
B0110532
C0171242
D0175022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4975210.422111%
B4975841.688442%
C49753747.517588%
D497564713.005025%

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 7098 4976 8 8 0.11% 0.16%
B 7098 4976 46 46 0.65% 0.92%
C 7098 4976 362 362 5.10% 7.27%
D 7098 4976 598 598 8.42% 12.02%

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 425426 3846.65 551 540 110.5
A 15 222 123522 1113.4 551 540 110.5
A 13 254 8330 70.53 551 540 110.5
B 5 172 282990 2707.56 548 534 104.3
B 5 255 111503 1063.72 548 534 104.3
B 12 111 12714 116.75 548 534 104.3
C 9 187 1492494 12004.08 535 539 124.3
C 15 208 768985 6182.82 535 539 124.3
C 15 214 203862 1635.91 535 539 124.3
D 13 249 1374816 11127.58 509 495 123.5
D 12 227 748847 6059.24 509 495 123.5
D 2 249 150590 1215.29 509 495 123.5

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