ASTROSAT CZTI

Data Quality Report

Orbit 16601

Creation date: 2024-06-27T17:24:56.024089
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/AS1C04_009T01_9000002448_16601cztM0_level2.evt modeM0/AS1C04_009T01_9000002448_16601cztM0_level2_quad_clean.evt
Size (bytes)423,797,760125,049,600
Size404.2 MB 119.3 MB
Events in quadrant A2,952,576840,823
Events in quadrant B3,313,035865,785
Events in quadrant C3,097,805851,389
Events in quadrant D3,074,684821,721

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126782
B0137901
C0130601
D0132701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5839470.804932%
B5839540.924816%
C5839821.404350%
D5839560.959068%

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 7185 5841 6 6 0.08% 0.10%
B 7185 5841 8 8 0.11% 0.14%
C 7185 5841 0 0 0.00% 0.00%
D 7185 5841 25 25 0.35% 0.43%

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 15 174 96433 668.03 728 716 143.3
A 9 143 25929 175.97 728 716 143.3
A 15 69 12243 80.45 728 716 143.3
B 15 35 136865 1018.2 737 721 133.7
B 0 85 61370 453.58 737 721 133.7
B 4 48 42630 313.43 737 721 133.7
C 3 233 122539 729.98 723 729 166.9
C 14 238 113177 673.88 723 729 166.9
C 7 247 42264 248.91 723 729 166.9
D 2 16 111681 637.44 724 703 174.1
D 1 52 83703 476.74 724 703 174.1
D 10 70 48291 273.34 724 703 174.1

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