ASTROSAT CZTI

Data Quality Report

Orbit 02140

Creation date: 2024-06-27T14:14:30.154656
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/AS1T01_072T02_9000000336_02140cztM0_level2.evt modeM0/AS1T01_072T02_9000000336_02140cztM0_level2_quad_clean.evt
Size (bytes)375,759,36075,945,600
Size358.4 MB 72.4 MB
Events in quadrant A2,626,751471,177
Events in quadrant B3,105,653476,296
Events in quadrant C2,635,046458,265
Events in quadrant D2,582,106453,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128151
B0137611
C0128321
D0129631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6309160.253606%
B6309240.380409%
C6309170.269456%
D6309250.396259%

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 7459 6310 2 2 0.03% 0.03%
B 7459 6310 1 1 0.01% 0.02%
C 7459 6310 1 1 0.01% 0.02%
D 7459 6310 11 11 0.15% 0.17%

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 1 18919 138.61 673 661 131.7
A 14 238 10990 78.42 673 661 131.7
A 15 171 9829 69.6 673 661 131.7
B 5 68 349737 2810.45 695 683 124.2
B 0 234 45728 362.68 695 683 124.2
B 0 198 31426 247.53 695 683 124.2
C 14 223 28433 190.99 663 666 145.4
C 10 82 4427 25.87 663 666 145.4
C 9 85 3723 21.02 663 666 145.4
D 9 64 33954 228.32 656 642 145.9
D 10 199 32496 218.32 656 642 145.9
D 13 53 27284 182.6 656 642 145.9

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