ASTROSAT CZTI

Data Quality Report

Orbit 26522

Creation date: 2024-06-27T19:30:01.797226
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/AS1C05_019T04_9000003838_26522cztM0_level2.evt modeM0/AS1C05_019T04_9000003838_26522cztM0_level2_quad_clean.evt
Size (bytes)659,894,400125,907,840
Size629.3 MB 120.1 MB
Events in quadrant A3,537,918861,318
Events in quadrant B3,789,451872,274
Events in quadrant C5,230,374826,697
Events in quadrant D6,915,755727,170

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156500
B0163300
C0206180
D0256750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7545640.848244%
B75451401.855533%
C75454616.110007%
D7544127516.900848%

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 7825 7547 12 12 0.15% 0.16%
B 7825 7547 33 33 0.42% 0.44%
C 7825 7547 125 125 1.60% 1.66%
D 7824 7545 1097 1097 14.02% 14.54%

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 0 13 81943 452.33 894 876 179.2
A 13 254 13687 71.48 894 876 179.2
A 3 137 7968 39.57 894 876 179.2
B 5 172 148024 876.61 894 869 167.9
B 3 112 46691 272.96 894 869 167.9
B 0 244 27639 159.47 894 869 167.9
C 3 233 1029706 5107.03 858 862 201.5
C 4 254 694298 3442.11 858 862 201.5
C 14 238 134386 662.79 858 862 201.5
D 1 52 2055398 10717.54 782 762 191.7
D 7 80 1675470 8735.73 782 762 191.7
D 12 233 101627 526.14 782 762 191.7

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