ASTROSAT CZTI

Data Quality Report

Orbit 31627

Creation date: 2024-06-27T20:30:50.604793
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/AS1A10_123T01_9000004620_31627cztM0_level2.evt modeM0/AS1A10_123T01_9000004620_31627cztM0_level2_quad_clean.evt
Size (bytes)719,925,12093,818,880
Size686.6 MB 89.5 MB
Events in quadrant A3,197,839651,700
Events in quadrant B5,739,424650,744
Events in quadrant C6,106,567567,559
Events in quadrant D6,339,206535,479

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133052
B0214492
C0223372
D0235692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6236220.352790%
B62362373.800513%
C623688014.111610%
D623665310.471456%

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 7546 6237 0 0 0.00% 0.00%
B 7546 6237 102 102 1.35% 1.64%
C 7546 6237 321 321 4.25% 5.15%
D 7546 6237 615 615 8.15% 9.86%

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 13 254 13592 78.83 822 809 162.2
A 14 238 11769 67.58 822 809 162.2
A 3 137 7431 40.83 822 809 162.2
B 6 159 1935212 12714.67 819 802 152.1
B 5 172 225886 1479.45 819 802 152.1
B 10 245 91336 595.07 819 802 152.1
C 3 233 2724104 15645.57 748 756 174.1
C 14 238 165261 945.07 748 756 174.1
C 0 10 153380 876.82 748 756 174.1
D 8 195 1593177 8987.85 746 729 177.2
D 12 218 1255314 7080.94 746 729 177.2
D 13 249 241359 1358.13 746 729 177.2

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