ASTROSAT CZTI

Data Quality Report

Orbit 21596

Creation date: 2024-06-27T18:30:00.088582
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/AS1A05_094T01_9000003204_21596cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21596cztM0_level2_quad_clean.evt
Size (bytes)438,762,24087,621,120
Size418.4 MB 83.6 MB
Events in quadrant A4,238,657556,122
Events in quadrant B2,881,605598,489
Events in quadrant C2,765,729568,834
Events in quadrant D3,023,997540,912

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161001
B0119631
C0116001
D0127251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A556457210.280374%
B5565510.916442%
C5565681.221923%
D55651011.814915%

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 6959 5565 500 500 7.18% 8.98%
B 6960 5566 8 8 0.11% 0.14%
C 6960 5566 0 0 0.00% 0.00%
D 6960 5566 72 72 1.03% 1.29%

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 15 236 1575770 11573.77 688 678 136.1
A 15 174 14836 104.03 688 678 136.1
A 13 254 7426 49.58 688 678 136.1
B 3 64 41945 315.72 711 694 130.7
B 0 190 18632 137.29 711 694 130.7
B 0 229 16528 121.19 711 694 130.7
C 14 238 109910 690.13 680 686 158.3
C 13 61 4747 25.66 680 686 158.3
C 7 221 2287 10.12 680 686 158.3
D 1 52 232338 1423.57 676 657 162.7
D 13 153 84263 513.72 676 657 162.7
D 2 136 42265 255.66 676 657 162.7

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