ASTROSAT CZTI

Data Quality Report

Orbit 38075

Creation date: 2024-06-27T21:48:08.413290
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/AS1A11_047T09_9000005362_38075cztM0_level2.fits modeM0/AS1A11_047T09_9000005362_38075cztM0_level2_quad_clean.evt
Size (bytes)392,351,04095,814,720
Size374.2 MB 91.4 MB
Events in quadrant A2,977,279653,905
Events in quadrant B2,840,492669,106
Events in quadrant C2,925,007635,070
Events in quadrant D5,337,726545,360

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120193
B0120552
C0119632
D0198132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A569780.140425%
B5697330.579252%
C5697170.298403%
D56975429.513779%

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 7160 5698 4 4 0.06% 0.07%
B 7160 5698 11 11 0.15% 0.19%
C 7160 5698 12 12 0.17% 0.21%
D 7160 5698 494 494 6.90% 8.67%

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 382111 2813.52 664 649 135.6
A 12 189 10113 69.8 664 649 135.6
A 13 254 8487 57.81 664 649 135.6
B 5 172 58990 459.87 658 640 126.9
B 4 171 56656 441.47 658 640 126.9
B 0 229 43574 338.37 658 640 126.9
C 15 214 238328 1573.0 644 649 151.1
C 1 23 126293 831.53 644 649 151.1
C 0 10 31251 202.53 644 649 151.1
D 1 52 1479536 9728.45 621 603 152.0
D 12 227 699562 4597.77 621 603 152.0
D 13 249 290850 1909.25 621 603 152.0

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