ASTROSAT CZTI

Data Quality Report

Orbit 19491

Creation date: 2024-06-27T18:03:24.879454
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_062T01_9000002892_19491cztM0_level2.evt modeM0/AS1A05_062T01_9000002892_19491cztM0_level2_quad_clean.evt
Size (bytes)508,196,16073,160,640
Size484.7 MB 69.8 MB
Events in quadrant A3,639,619442,750
Events in quadrant B3,328,104450,868
Events in quadrant C3,535,408431,401
Events in quadrant D4,424,802414,666

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153911
B0142551
C0146191
D0175911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6817580.850814%
B6817530.777468%
C6817711.041514%
D68172133.124542%

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 7342 6818 7 7 0.10% 0.10%
B 7342 6818 12 12 0.16% 0.18%
C 7342 6818 4 4 0.05% 0.06%
D 7342 6817 148 148 2.02% 2.17%

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 10 253 449471 2704.75 820 804 165.9
A 11 29 18760 108.25 820 804 165.9
A 3 1 9399 51.81 820 804 165.9
B 4 171 44909 281.2 815 792 156.9
B 7 220 20010 122.49 815 792 156.9
B 12 111 18679 114.01 815 792 156.9
C 9 221 188396 1007.79 790 796 186.2
C 3 233 142727 762.45 790 796 186.2
C 14 238 121826 650.17 790 796 186.2
D 1 52 554030 2830.15 794 770 195.5
D 7 223 490969 2507.57 794 770 195.5
D 7 238 184248 938.56 794 770 195.5

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