ASTROSAT CZTI

Data Quality Report

Orbit 26113

Creation date: 2024-06-27T19:24:50.991172
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/AS1A09_018T01_9000003774_26113cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26113cztM0_level2_quad_clean.evt
Size (bytes)518,561,28071,435,520
Size494.5 MB 68.1 MB
Events in quadrant A3,480,230450,644
Events in quadrant B3,519,065459,594
Events in quadrant C3,604,863426,912
Events in quadrant D4,682,820395,507

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138740
B0141470
C0145540
D0177920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6166661.070386%
B6166731.183912%
C61661632.643529%
D61664196.795329%

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 7556 6166 1 1 0.01% 0.02%
B 7556 6166 0 0 0.00% 0.00%
C 7556 6166 7 7 0.09% 0.11%
D 7556 6166 320 320 4.24% 5.19%

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 0 13 10091 51.51 901 888 178.7
A 13 254 8509 42.65 901 888 178.7
A 0 226 7726 38.27 901 888 178.7
B 12 111 19597 112.52 895 877 166.4
B 11 111 17700 101.12 895 877 166.4
B 14 111 16519 94.02 895 877 166.4
C 14 238 139366 709.58 852 863 195.2
C 2 16 72459 366.8 852 863 195.2
C 3 233 66974 338.7 852 863 195.2
D 1 52 1312871 6591.0 839 821 199.1
D 12 233 116622 581.72 839 821 199.1
D 1 3 32972 161.51 839 821 199.1

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