ASTROSAT CZTI

Data Quality Report

Orbit 42633

Creation date: 2024-06-27T22:42:27.244689
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/AS1A05_174T01_9000005820_42633cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42633cztM0_level2_quad_clean.evt
Size (bytes)313,309,44090,887,040
Size298.8 MB 86.7 MB
Events in quadrant A2,833,971612,318
Events in quadrant B2,464,291634,518
Events in quadrant C2,793,629612,202
Events in quadrant D3,115,140542,018

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113472
B0104442
C0111992
D0126222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5012120.239425%
B5012220.438947%
C5012100.199521%
D50122064.110136%

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 7045 5013 1 1 0.01% 0.02%
B 7045 5013 13 13 0.18% 0.26%
C 7045 5013 8 8 0.11% 0.16%
D 7045 5013 180 180 2.56% 3.59%

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 525910 4360.47 590 578 120.5
A 2 79 14808 118.11 590 578 120.5
A 13 248 11461 90.33 590 578 120.5
B 0 245 91385 809.3 586 569 112.2
B 0 168 49620 437.11 586 569 112.2
B 7 202 24043 209.19 586 569 112.2
C 3 233 211879 1545.49 587 592 136.7
C 15 214 211403 1542.01 587 592 136.7
C 14 254 81556 592.22 587 592 136.7
D 13 249 358125 2596.95 571 557 137.7
D 12 6 267259 1937.0 571 557 137.7
D 1 52 205601 1489.19 571 557 137.7

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