ASTROSAT CZTI

Data Quality Report

Orbit 27844

Creation date: 2024-06-27T19:45:06.466424
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_002T04_9000004022_27844cztM0_level2.evt modeM0/AS1A10_002T04_9000004022_27844cztM0_level2_quad_clean.evt
Size (bytes)1,790,873,280295,997,760
Size1.7 GB 282.3 MB
Events in quadrant A11,476,8941,891,201
Events in quadrant B13,030,2851,842,883
Events in quadrant C12,325,9251,804,404
Events in quadrant D15,771,8531,763,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0495800
B0540110
C0517530
D0631650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241762010.831403%
B241766472.676208%
C241763711.534580%
D241779483.921082%

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 26756 24176 22 22 0.08% 0.09%
B 26756 24176 345 345 1.29% 1.43%
C 26756 24177 8 8 0.03% 0.03%
D 26757 24177 730 730 2.73% 3.02%

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 6 16 59099 95.53 2940 2878 588.5
A 13 248 53956 86.79 2940 2878 588.5
A 13 254 42316 67.01 2940 2878 588.5
B 10 245 1367668 2473.1 2887 2809 551.9
B 0 190 162226 288.86 2887 2809 551.9
B 15 33 85779 150.34 2887 2809 551.9
C 3 233 911932 1382.73 2813 2826 657.5
C 14 238 450367 680.7 2813 2826 657.5
C 13 61 19074 24.71 2813 2826 657.5
D 1 52 4443699 6709.17 2811 2742 661.9
D 2 250 449903 675.55 2811 2742 661.9
D 2 120 132726 196.37 2811 2742 661.9

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