ASTROSAT CZTI

Data Quality Report

Orbit 40890

Creation date: 2024-06-27T22:21:49.064898
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_097T01_9000005574_40890cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40890cztM0_level2_quad_clean.evt
Size (bytes)391,662,72084,061,440
Size373.5 MB 80.2 MB
Events in quadrant A2,719,042571,696
Events in quadrant B3,909,182561,950
Events in quadrant C2,575,097562,949
Events in quadrant D4,882,715477,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113372
B0152191
C0111401
D0181621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5294130.245561%
B52943817.196827%
C5294300.566679%
D529454710.332452%

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 6937 5295 1 1 0.01% 0.02%
B 6937 5295 301 301 4.34% 5.68%
C 6937 5295 19 19 0.27% 0.36%
D 6937 5295 464 464 6.69% 8.76%

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 457788 3898.35 569 558 117.3
A 13 248 34245 287.22 569 558 117.3
A 2 79 14279 116.99 569 558 117.3
B 5 255 1364907 12700.35 554 538 107.4
B 4 171 242030 2247.95 554 538 107.4
B 15 85 73000 674.52 554 538 107.4
C 15 214 220617 1668.84 558 562 131.9
C 14 254 103605 781.45 558 562 131.9
C 0 10 67707 509.21 558 562 131.9
D 12 233 767593 5809.28 535 521 132.0
D 12 79 735248 5564.32 535 521 132.0
D 2 249 716580 5422.94 535 521 132.0

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