ASTROSAT CZTI

Data Quality Report

Orbit 43425

Creation date: 2024-06-27T22:51:49.591911
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_9000005874_43425cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43425cztM0_level2_quad_clean.evt
Size (bytes)666,152,640165,024,000
Size635.3 MB 157.4 MB
Events in quadrant A5,840,1891,113,988
Events in quadrant B5,169,6411,140,752
Events in quadrant C5,139,2261,069,401
Events in quadrant D7,702,126950,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235299
B0224634
C0220374
D0299472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104131231.181216%
B10417500.479985%
C10416320.307220%
D104174724.531055%

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 13402 10418 90 90 0.67% 0.86%
B 13403 10420 39 39 0.29% 0.37%
C 13402 10419 28 28 0.21% 0.27%
D 13402 10419 516 516 3.85% 4.95%

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 1084598 4768.58 1111 1089 227.2
A 15 237 409570 1797.75 1111 1089 227.2
A 13 6 25480 107.35 1111 1089 227.2
B 0 189 244968 1162.66 1110 1080 209.8
B 0 199 186545 884.15 1110 1080 209.8
B 5 255 111343 525.65 1110 1080 209.8
C 15 214 423140 1673.03 1086 1091 252.3
C 2 16 303152 1197.39 1086 1091 252.3
C 3 233 139359 548.1 1086 1091 252.3
D 2 16 1121020 4311.98 1067 1035 259.7
D 1 52 800481 3077.89 1067 1035 259.7
D 13 249 651870 2505.74 1067 1035 259.7

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