ASTROSAT CZTI

Data Quality Report

Orbit 46942

Creation date: 2024-06-27T23:29:44.335296
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/AS1A13_077T01_9000006286_46942cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46942cztM0_level2_quad_clean.evt
Size (bytes)757,604,160107,853,120
Size722.5 MB 102.9 MB
Events in quadrant A7,420,356748,487
Events in quadrant B10,233,305578,447
Events in quadrant C3,910,834755,228
Events in quadrant D5,913,370673,442

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269912
B0354768
C0169452
D0226212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73283554.844432%
B7327227831.090487%
C73281932.633734%
D73284406.004367%

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 7683 7328 49 49 0.64% 0.67%
B 7682 7327 1806 1806 23.51% 24.65%
C 7683 7330 156 156 2.03% 2.13%
D 7683 7330 340 340 4.43% 4.64%

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 4196054 24634.05 811 793 170.3
A 13 248 15789 88.05 811 793 170.3
A 0 243 15330 85.36 811 793 170.3
B 3 112 6837033 46787.82 737 716 146.1
B 4 171 135543 922.76 737 716 146.1
B 15 36 110889 754.03 737 716 146.1
C 12 2 522819 2707.61 803 804 192.8
C 14 254 217872 1125.9 803 804 192.8
C 3 233 14605 71.58 803 804 192.8
D 1 52 1619249 8114.38 787 764 199.5
D 13 249 564689 2827.28 787 764 199.5
D 10 181 323315 1617.13 787 764 199.5

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