ASTROSAT CZTI

Data Quality Report

Orbit 28991

Creation date: 2024-06-27T19:58:53.329453
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/AS1A10_073T06_9000004156_28991cztM0_level2.evt modeM0/AS1A10_073T06_9000004156_28991cztM0_level2_quad_clean.evt
Size (bytes)557,524,800104,388,480
Size531.7 MB 99.6 MB
Events in quadrant A4,154,139696,718
Events in quadrant B3,628,646720,552
Events in quadrant C3,263,348678,240
Events in quadrant D5,406,544620,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167431
B0148271
C0137981
D0204211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63812363.698480%
B6381821.285065%
C63811101.723868%
D63816069.496944%

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 7571 6382 158 158 2.09% 2.48%
B 7571 6382 23 23 0.30% 0.36%
C 7571 6382 0 0 0.00% 0.00%
D 7571 6382 481 481 6.35% 7.54%

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 15 192 885505 5363.64 830 815 164.9
A 0 13 59995 358.79 830 815 164.9
A 13 254 12001 67.82 830 815 164.9
B 10 245 245159 1567.62 826 805 155.9
B 10 246 127059 809.97 826 805 155.9
B 12 111 18604 114.19 826 805 155.9
C 14 238 129698 690.53 799 805 186.7
C 2 114 15687 79.73 799 805 186.7
C 13 61 5526 25.29 799 805 186.7
D 1 52 1072384 5863.22 778 758 182.8
D 7 80 825905 4514.66 778 758 182.8
D 8 195 315194 1720.38 778 758 182.8

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