ASTROSAT CZTI

Data Quality Report

Orbit 50218

Creation date: 2025-01-09T21:25:25.166914
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/AS1C09_003T01_9000006442_50218cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50218cztM0_level2_quad_clean.evt
Size (bytes)965,471,04067,893,120
Size920.7 MB 64.7 MB
Events in quadrant A6,678,947483,044
Events in quadrant B5,112,629602,978
Events in quadrant C11,402,578277,677
Events in quadrant D12,077,503268,536

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239381
B0193851
C0380421
D0400641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6054129321.357780%
B60555539.132948%
C6055337155.672998%
D6055346657.241949%

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 7144 6054 1146 1146 16.04% 18.93%
B 7145 6055 378 378 5.29% 6.24%
C 7144 6054 3210 3210 44.93% 53.02%
D 7144 6054 3466 3466 48.52% 57.25%

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 0 98 2225471 15048.02 586 571 147.9
A 4 249 572876 3870.76 586 571 147.9
A 4 156 272162 1836.89 586 571 147.9
B 4 206 1854558 13970.42 622 602 132.7
B 10 28 217623 1635.35 622 602 132.7
B 3 249 60312 449.94 622 602 132.7
C 4 111 5781918 44276.25 473 470 130.6
C 15 197 1662430 12727.84 473 470 130.6
C 15 214 567818 4344.94 473 470 130.6
D 15 108 3148918 21220.26 510 489 148.4
D 7 61 2897950 19528.75 510 489 148.4
D 11 245 613641 4132.61 510 489 148.4

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