ASTROSAT CZTI

Data Quality Report

Orbit 17721

Creation date: 2024-06-27T17:40:02.067267
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/AS1T03_042T01_9000002630_17721cztM0_level2.evt modeM0/AS1T03_042T01_9000002630_17721cztM0_level2_quad_clean.evt
Size (bytes)524,093,760104,852,160
Size499.8 MB 100.0 MB
Events in quadrant A3,501,902669,852
Events in quadrant B3,608,921688,247
Events in quadrant C3,546,584654,451
Events in quadrant D4,697,261632,702

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156171
B0157721
C0156141
D0192211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76241622.124869%
B76251832.400000%
C76251932.531148%
D76253514.603279%

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 7714 7626 0 0 0.00% 0.00%
B 7715 7627 4 4 0.05% 0.05%
C 7715 7627 0 0 0.00% 0.00%
D 7715 7626 195 195 2.53% 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 15 174 12319 62.11 904 881 184.2
A 12 16 10573 52.63 904 881 184.2
A 12 194 8195 39.72 904 881 184.2
B 10 245 40260 228.44 899 874 172.4
B 12 111 21082 117.21 899 874 172.4
B 0 189 20556 114.15 899 874 172.4
C 14 238 132665 655.35 860 861 201.1
C 5 218 36717 178.28 860 861 201.1
C 3 233 20100 95.66 860 861 201.1
D 7 238 1113297 4821.67 853 833 230.7
D 13 232 156845 676.19 853 833 230.7
D 1 52 64266 274.93 853 833 230.7

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