ASTROSAT CZTI

Data Quality Report

Orbit 18199

Creation date: 2024-06-27T17:46:37.502819
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/AS1A05_160T02_9000002710_18199cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18199cztM0_level2_quad_clean.evt
Size (bytes)625,429,44089,533,440
Size596.5 MB 85.4 MB
Events in quadrant A4,064,155542,278
Events in quadrant B4,316,963545,007
Events in quadrant C4,168,216528,453
Events in quadrant D5,833,872523,636

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174122
B0182052
C0175862
D0229642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82321381.676385%
B82332402.915098%
C82332643.206608%
D82324034.895530%

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 8782 8234 10 10 0.11% 0.12%
B 8783 8235 23 23 0.26% 0.28%
C 8783 8235 2 2 0.02% 0.02%
D 8782 8234 146 146 1.66% 1.77%

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 15 174 78808 369.35 1033 1008 210.6
A 4 2 11291 48.82 1033 1008 210.6
A 0 226 9201 38.9 1033 1008 210.6
B 7 220 134962 684.15 1023 998 195.8
B 0 197 57201 287.03 1023 998 195.8
B 12 111 22818 111.43 1023 998 195.8
C 14 238 151532 652.12 982 986 230.9
C 4 254 143607 617.79 982 986 230.9
C 3 233 23725 98.5 982 986 230.9
D 5 222 1455797 5986.3 995 963 243.0
D 7 238 441987 1814.71 995 963 243.0
D 10 70 43846 176.45 995 963 243.0

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