ASTROSAT CZTI

Data Quality Report

Orbit 40780

Creation date: 2024-06-27T22:20:23.975703
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_095T02_9000005568_40780cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40780cztM0_level2_quad_clean.evt
Size (bytes)377,948,16083,531,520
Size360.4 MB 79.7 MB
Events in quadrant A3,264,049568,357
Events in quadrant B2,612,803602,364
Events in quadrant C4,013,255541,939
Events in quadrant D3,718,801473,087

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126593
B0108612
C0149972
D0143402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48981483.021641%
B4898691.408738%
C48983988.125766%
D489853110.841160%

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 7051 4899 139 139 1.97% 2.84%
B 7051 4899 45 45 0.64% 0.92%
C 7051 4899 409 409 5.80% 8.35%
D 7051 4899 251 251 3.56% 5.12%

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 13 248 595619 5282.87 554 544 112.6
A 10 83 466802 4139.27 554 544 112.6
A 2 79 25234 219.18 554 544 112.6
B 5 255 176043 1623.86 560 544 108.1
B 0 229 118230 1088.92 560 544 108.1
B 7 202 42030 383.86 560 544 108.1
C 9 187 1566259 12673.47 529 533 123.5
C 15 214 203335 1641.54 529 533 123.5
C 0 10 175562 1416.74 529 533 123.5
D 12 227 939496 7368.45 513 498 127.4
D 5 222 269218 2108.68 513 498 127.4
D 2 249 179268 1402.83 513 498 127.4

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