ASTROSAT CZTI

Data Quality Report

Orbit 20909

Creation date: 2024-06-27T18:21:02.005290
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/AS1A06_002T03_9000003080_20909cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20909cztM0_level2_quad_clean.evt
Size (bytes)660,674,880115,470,720
Size630.1 MB 110.1 MB
Events in quadrant A4,547,645732,187
Events in quadrant B4,798,622733,583
Events in quadrant C4,752,116702,779
Events in quadrant D5,282,071686,444

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0121
C0122
D0121

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242244623
B0247044441
C0250794867
D0265244717

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022935
B022838
C023046
D023141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9263740.798877%
B92481171.265138%
C92092442.649582%
D92602622.829374%

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 12826 9787 22 22 0.17% 0.22%
B 12822 9792 24 24 0.19% 0.25%
C 12778 9720 104 104 0.81% 1.07%
D 12818 9773 250 250 1.95% 2.56%

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 6 16 186549 824.71 1110 1086 224.9
A 15 174 53263 232.02 1110 1086 224.9
A 5 16 42779 185.4 1110 1086 224.9
B 7 220 283892 1335.12 1105 1077 211.8
B 0 228 55362 256.27 1105 1077 211.8
B 0 190 37712 172.95 1105 1077 211.8
C 9 54 444464 1800.9 1054 1061 246.2
C 14 238 166389 671.49 1054 1061 246.2
C 10 91 12634 47.0 1054 1061 246.2
D 1 52 1065525 4125.76 1070 1040 258.0
D 7 38 130217 500.67 1070 1040 258.0
D 2 234 48023 182.1 1070 1040 258.0

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