ASTROSAT CZTI

Data Quality Report

Orbit 44041

Creation date: 2024-06-27T22:58:38.567859
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/AS1A13_025T01_9000005936_44041cztM0_level2.fits modeM0/AS1A13_025T01_9000005936_44041cztM0_level2_quad_clean.evt
Size (bytes)552,660,480106,067,520
Size527.1 MB 101.2 MB
Events in quadrant A6,224,622652,814
Events in quadrant B3,294,198761,611
Events in quadrant C5,068,110697,397
Events in quadrant D5,355,500637,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228472
B0142182
C0196322
D0205522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A663890113.573365%
B66391031.551438%
C66395257.907817%
D66394997.516192%

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 8898 6640 622 622 6.99% 9.37%
B 8899 6641 15 15 0.17% 0.23%
C 8899 6640 505 505 5.67% 7.61%
D 8899 6640 359 359 4.03% 5.41%

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 15 222 2228124 15325.5 705 692 145.3
A 10 83 1231228 8466.51 705 692 145.3
A 14 238 19112 126.74 705 692 145.3
B 0 213 111074 736.5 759 733 149.8
B 0 200 52402 344.88 759 733 149.8
B 15 36 41610 272.85 759 733 149.8
C 1 241 1943997 11408.51 726 730 170.3
C 14 254 238254 1394.45 726 730 170.3
C 3 233 28062 160.46 726 730 170.3
D 1 52 1182488 6482.82 718 697 182.3
D 5 235 509885 2793.19 718 697 182.3
D 5 222 336351 1841.26 718 697 182.3

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