ASTROSAT CZTI

Data Quality Report

Orbit 46301

Creation date: 2024-06-27T23:21:27.775334
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_072T02_9000006194_46301cztM0_level2.fits modeM0/AS1A13_072T02_9000006194_46301cztM0_level2_quad_clean.evt
Size (bytes)540,201,600115,954,560
Size515.2 MB 110.6 MB
Events in quadrant A6,222,307766,083
Events in quadrant B5,678,097797,333
Events in quadrant C3,306,563774,660
Events in quadrant D4,262,225699,670

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228172
B0216312
C0143582
D0173212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68004256.250000%
B68014075.984414%
C68011792.631966%
D68013094.543449%

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 9000 6802 6 6 0.07% 0.09%
B 9001 6803 61 61 0.68% 0.90%
C 9001 6803 4 4 0.04% 0.06%
D 9001 6803 92 92 1.02% 1.35%

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 2941391 17079.52 831 814 172.2
A 15 223 38172 216.98 831 814 172.2
A 13 254 12316 66.81 831 814 172.2
B 4 171 1411848 8719.08 819 795 161.8
B 3 112 958930 5920.44 819 795 161.8
B 5 255 53458 325.41 819 795 161.8
C 12 2 48608 244.81 828 834 195.1
C 1 3 12933 62.0 828 834 195.1
C 12 250 11206 53.15 828 834 195.1
D 1 52 830040 4017.72 824 798 206.4
D 13 249 217199 1048.47 824 798 206.4
D 5 171 41887 199.08 824 798 206.4

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