ASTROSAT CZTI

Data Quality Report

Orbit 26983

Creation date: 2024-06-27T19:35:14.956698
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/AS1A09_145T01_9000003900_26983cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26983cztM0_level2_quad_clean.evt
Size (bytes)739,252,800106,871,040
Size705.0 MB 101.9 MB
Events in quadrant A10,682,093589,260
Events in quadrant B3,520,797761,507
Events in quadrant C3,495,003721,408
Events in quadrant D4,229,699689,085

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364590
B0145550
C0144620
D0170600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6812312345.845567%
B6812560.822079%
C6812821.203758%
D68121662.436876%

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 7967 6813 2578 2578 32.36% 37.84%
B 7967 6812 0 0 0.00% 0.00%
C 7967 6813 3 3 0.04% 0.04%
D 7967 6812 127 127 1.59% 1.86%

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 14 235 7730307 55717.61 687 676 138.7
A 6 16 260777 1874.89 687 676 138.7
A 8 192 23513 164.62 687 676 138.7
B 12 111 19811 112.17 888 871 168.8
B 0 230 19321 109.27 888 871 168.8
B 11 111 17414 97.98 888 871 168.8
C 14 238 137897 680.53 854 862 201.4
C 15 208 27384 131.71 854 862 201.4
C 13 61 5824 24.64 854 862 201.4
D 1 52 906819 4135.2 834 820 219.1
D 2 250 135189 613.29 834 820 219.1
D 2 234 26956 119.29 834 820 219.1

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