ASTROSAT CZTI

Data Quality Report

Orbit 11523

Creation date: 2024-06-27T16:14:12.850857
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_022T05_9000001690_11523cztM0_level2.evt modeM0/AS1A04_022T05_9000001690_11523cztM0_level2_quad_clean.evt
Size (bytes)637,614,720101,278,080
Size608.1 MB 96.6 MB
Events in quadrant A5,759,099635,346
Events in quadrant B4,712,214650,492
Events in quadrant C3,069,755693,486
Events in quadrant D5,328,904633,500

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216561
B0183020
C0133670
D0201790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A651672311.095764%
B65164176.399632%
C6516831.273788%
D65164146.353591%

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 7552 6517 396 396 5.24% 6.08%
B 7552 6518 190 190 2.52% 2.92%
C 7552 6518 0 0 0.00% 0.00%
D 7552 6518 320 320 4.24% 4.91%

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 2616042 16994.74 766 750 153.9
A 9 143 68383 439.49 766 750 153.9
A 1 162 46979 300.41 766 750 153.9
B 4 239 1179749 8003.18 779 760 147.3
B 11 51 132396 893.57 779 760 147.3
B 3 64 115370 777.99 779 760 147.3
C 13 61 5538 26.02 786 790 182.5
C 7 87 3000 12.11 786 790 182.5
C 14 67 2983 12.02 786 790 182.5
D 6 219 926933 4978.43 774 753 186.0
D 13 152 670433 3599.69 774 753 186.0
D 1 52 240086 1286.47 774 753 186.0

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