ASTROSAT CZTI

Data Quality Report

Orbit 23863

Creation date: 2024-06-27T18:59:30.352742
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/AS1A07_149T01_9000003534_23863cztM0_level2.evt modeM0/AS1A07_149T01_9000003534_23863cztM0_level2_quad_clean.evt
Size (bytes)665,409,600171,460,800
Size634.6 MB 163.5 MB
Events in quadrant A4,778,2081,138,652
Events in quadrant B4,951,1641,148,582
Events in quadrant C4,777,1341,106,773
Events in quadrant D4,950,3041,089,793

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236012652
B0241552872
C0236302740
D0241882881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023834
B023830
C023725
D023734

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10277990.963316%
B102381191.162336%
C102501361.326829%
D10228970.948377%

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 25170 10576 0 0 0.00% 0.00%
B 25171 10535 5 5 0.02% 0.05%
C 25171 10563 0 0 0.00% 0.00%
D 25171 10530 1 1 0.00% 0.01%

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 13 252 30516 119.11 1228 1202 246.1
A 13 254 16421 61.84 1228 1202 246.1
A 2 250 13857 51.42 1228 1202 246.1
B 0 189 88247 379.93 1213 1181 229.2
B 15 32 46750 198.85 1213 1181 229.2
B 12 111 28074 117.35 1213 1181 229.2
C 14 238 185018 675.69 1169 1174 272.1
C 7 247 19839 68.6 1169 1174 272.1
C 13 61 8112 25.5 1169 1174 272.1
D 8 195 297857 1026.07 1192 1156 289.2
D 1 52 109901 376.07 1192 1156 289.2
D 2 234 46237 155.9 1192 1156 289.2

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