ASTROSAT CZTI

Data Quality Report

Orbit 40356

Creation date: 2024-06-27T22:15:13.575755
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_056T02_9000005538_40356cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40356cztM0_level2_quad_clean.evt
Size (bytes)1,548,184,320381,297,600
Size1.4 GB 363.6 MB
Events in quadrant A14,348,7332,597,695
Events in quadrant B10,862,8402,679,190
Events in quadrant C12,152,2942,574,726
Events in quadrant D18,147,3852,095,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0571986
B0482225
C0505805
D0697035

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232243141.352050%
B232241070.460730%
C232241640.706166%
D23224306913.214778%

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 30328 23228 257 257 0.85% 1.11%
B 30327 23225 58 58 0.19% 0.25%
C 30327 23225 136 136 0.45% 0.59%
D 30327 23226 1587 1587 5.23% 6.83%

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 1798279 3462.36 2568 2525 518.7
A 13 248 1127936 2169.88 2568 2525 518.7
A 6 10 1067392 2053.15 2568 2525 518.7
B 5 255 279379 568.37 2550 2480 487.2
B 4 170 218541 443.49 2550 2480 487.2
B 0 230 116122 233.26 2550 2480 487.2
C 14 254 1230492 2103.14 2509 2533 583.9
C 15 214 1038404 1774.15 2509 2533 583.9
C 12 249 44156 71.29 2509 2533 583.9
D 12 227 6114827 10428.91 2362 2301 586.1
D 12 128 1122815 1911.77 2362 2301 586.1
D 12 191 555306 943.51 2362 2301 586.1

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