ASTROSAT CZTI

Data Quality Report

Orbit 21219

Creation date: 2024-06-27T18:25:07.513583
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/AS1A06_005T05_9000003136_21219cztM0_level2.evt modeM0/AS1A06_005T05_9000003136_21219cztM0_level2_quad_clean.evt
Size (bytes)527,774,40095,083,200
Size503.3 MB 90.7 MB
Events in quadrant A3,229,973645,542
Events in quadrant B3,134,666658,208
Events in quadrant C4,304,282588,233
Events in quadrant D4,917,830578,052

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132941
B0130091
C0165741
D0186141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5856530.905055%
B5855681.161401%
C58554547.754056%
D58553505.977797%

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 7206 5857 3 3 0.04% 0.05%
B 7205 5856 6 6 0.08% 0.10%
C 7205 5856 291 291 4.04% 4.97%
D 7205 5855 299 299 4.15% 5.11%

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 11 47 181302 1163.45 775 763 155.2
A 15 236 52554 333.76 775 763 155.2
A 13 254 9478 56.16 775 763 155.2
B 3 64 36372 245.5 773 756 145.1
B 0 190 34190 230.46 773 756 145.1
B 0 219 17819 117.61 773 756 145.1
C 3 233 1411979 8530.89 711 716 165.4
C 14 238 112469 675.53 711 716 165.4
C 0 10 9991 56.07 711 716 165.4
D 7 238 875387 5002.65 724 704 174.8
D 15 0 304222 1735.94 724 704 174.8
D 1 239 298747 1704.62 724 704 174.8

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