ASTROSAT CZTI

Data Quality Report

Orbit 20700

Creation date: 2024-06-27T18:18:33.653749
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/AS1A05_165T07_9000003062_20700cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20700cztM0_level2_quad_clean.evt
Size (bytes)416,269,44082,235,520
Size397.0 MB 78.4 MB
Events in quadrant A2,855,871544,425
Events in quadrant B3,386,930526,090
Events in quadrant C2,823,580505,566
Events in quadrant D3,145,380508,176

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121481
B0139211
C0121371
D0131351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5801951.637649%
B58022063.550500%
C58021151.982075%
D58021101.895898%

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 6951 5802 0 0 0.00% 0.00%
B 6952 5803 61 61 0.88% 1.05%
C 6952 5803 0 0 0.00% 0.00%
D 6952 5803 34 34 0.49% 0.59%

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 0 226 6571 38.77 743 729 150.7
A 3 137 5730 33.19 743 729 150.7
A 12 194 5473 31.48 743 729 150.7
B 7 220 467692 3385.98 727 708 137.9
B 0 190 20829 145.89 727 708 137.9
B 12 111 15928 110.36 727 708 137.9
C 14 238 109673 680.73 691 695 160.1
C 7 247 11796 69.34 691 695 160.1
C 3 233 6661 37.27 691 695 160.1
D 7 38 117363 680.97 710 689 171.3
D 5 222 87338 505.73 710 689 171.3
D 13 153 67031 387.21 710 689 171.3

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