ASTROSAT CZTI

Data Quality Report

Orbit 26067

Creation date: 2024-06-27T19:24:26.473081
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_142T01_9000003766_26067cztM0_level2.evt modeM0/AS1A09_142T01_9000003766_26067cztM0_level2_quad_clean.evt
Size (bytes)574,364,16083,352,960
Size547.8 MB 79.5 MB
Events in quadrant A3,322,470541,500
Events in quadrant B3,365,953545,369
Events in quadrant C3,278,194510,936
Events in quadrant D7,002,357487,929

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137580
B0139160
C0136260
D0249290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6276460.732951%
B6276610.971957%
C6276741.179095%
D6276155124.713193%

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 7541 6276 0 0 0.00% 0.00%
B 7541 6276 5 5 0.07% 0.08%
C 7541 6276 3 3 0.04% 0.05%
D 7541 6276 1478 1478 19.60% 23.55%

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 10932 59.5 861 847 169.5
A 0 226 7610 39.9 861 847 169.5
A 3 137 7041 36.55 861 847 169.5
B 12 111 17986 109.92 848 828 156.1
B 11 111 16274 98.95 848 828 156.1
B 0 229 15377 93.21 848 828 156.1
C 14 238 132717 715.17 802 809 184.4
C 2 16 10117 50.47 802 809 184.4
C 3 233 8278 40.49 802 809 184.4
D 1 3 2751638 14094.62 729 715 195.2
D 12 233 771173 3947.52 729 715 195.2
D 1 52 630713 3227.86 729 715 195.2

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