ASTROSAT CZTI

Data Quality Report

Orbit 11401

Creation date: 2024-06-27T16:12:24.751728
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/AS1A04_022T04_9000001666_11401cztM0_level2.evt modeM0/AS1A04_022T04_9000001666_11401cztM0_level2_quad_clean.evt
Size (bytes)520,372,80085,432,320
Size496.3 MB 81.5 MB
Events in quadrant A3,560,383525,772
Events in quadrant B4,203,615519,795
Events in quadrant C3,056,953564,228
Events in quadrant D4,491,175517,359

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147492
B0167131
C0133931
D0177981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65931111.683604%
B65933024.580616%
C6593330.500531%
D65931922.912180%

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 7688 6594 39 39 0.51% 0.59%
B 7688 6594 157 157 2.04% 2.38%
C 7688 6594 0 0 0.00% 0.00%
D 7688 6594 104 104 1.35% 1.58%

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 8 5 314419 1920.65 802 784 163.3
A 1 162 60948 368.44 802 784 163.3
A 1 178 35689 213.75 802 784 163.3
B 4 239 981000 6408.7 789 768 153.0
B 3 189 95073 616.56 789 768 153.0
B 15 204 21610 136.26 789 768 153.0
C 8 222 6317 30.42 783 788 181.7
C 13 61 5588 26.41 783 788 181.7
C 3 202 1916 6.21 783 788 181.7
D 1 52 769577 4158.77 771 748 184.9
D 13 249 316051 1705.55 771 748 184.9
D 10 253 168585 907.87 771 748 184.9

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