ASTROSAT CZTI

Data Quality Report

Orbit 07438

Creation date: 2024-06-27T15:19:45.627610
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/AS1A02_108T01_9000001024_07438cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07438cztM0_level2_quad_clean.evt
Size (bytes)493,116,48071,573,760
Size470.3 MB 68.3 MB
Events in quadrant A3,223,230435,028
Events in quadrant B3,307,812441,989
Events in quadrant C4,263,739430,286
Events in quadrant D3,699,968408,234

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138203
B0140252
C0177322
D0151652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6472751.158838%
B6472741.143387%
C6472560.865266%
D64721602.472188%

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 7727 6472 0 0 0.00% 0.00%
B 7727 6472 2 2 0.03% 0.03%
C 7727 6473 0 0 0.00% 0.00%
D 7727 6473 96 96 1.24% 1.48%

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 15 239 15779 89.49 829 812 167.3
A 3 1 8561 46.33 829 812 167.3
A 0 226 8039 43.21 829 812 167.3
B 0 214 53470 336.44 834 815 156.5
B 4 81 17464 106.38 834 815 156.5
B 12 111 15106 91.31 834 815 156.5
C 9 68 1140186 6217.21 798 806 183.3
C 13 61 6184 29.35 798 806 183.3
C 7 87 5352 24.81 798 806 183.3
D 14 34 383441 2003.0 795 771 191.0
D 13 105 155618 810.51 795 771 191.0
D 2 14 96799 502.64 795 771 191.0

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