ASTROSAT CZTI

Data Quality Report

Orbit 44157

Creation date: 2024-06-27T22:59:53.770891
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_080T06_9000005954_44157cztM0_level2.fits modeM0/AS1A13_080T06_9000005954_44157cztM0_level2_quad_clean.evt
Size (bytes)519,618,240104,140,800
Size495.5 MB 99.3 MB
Events in quadrant A5,835,496687,748
Events in quadrant B4,220,661732,412
Events in quadrant C3,194,405680,640
Events in quadrant D5,480,099599,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218912
B0170352
C0143682
D0207342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64984256.540474%
B64982473.801170%
C64972183.355395%
D64974917.557334%

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 7563 6499 166 166 2.19% 2.55%
B 7563 6499 149 149 1.97% 2.29%
C 7562 6498 53 53 0.70% 0.82%
D 7562 6498 397 397 5.25% 6.11%

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 10 83 1555143 10626.86 697 684 146.3
A 15 223 766383 5234.6 697 684 146.3
A 14 238 425824 2906.42 697 684 146.3
B 5 172 337291 2465.85 710 690 136.5
B 5 235 321923 2353.27 710 690 136.5
B 0 200 300537 2196.6 710 690 136.5
C 15 158 289439 1832.83 676 681 157.5
C 14 254 138252 873.2 676 681 157.5
C 5 4 55058 345.15 676 681 157.5
D 12 233 583170 3434.17 669 648 169.6
D 1 52 516228 3039.53 669 648 169.6
D 1 47 440455 2592.82 669 648 169.6

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