ASTROSAT CZTI

Data Quality Report

Orbit 45923

Creation date: 2024-06-27T23:17:45.469255
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_071T03_9000006142_45923cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45923cztM0_level2_quad_clean.evt
Size (bytes)607,049,280104,964,480
Size578.9 MB 100.1 MB
Events in quadrant A5,926,747726,391
Events in quadrant B6,156,039731,654
Events in quadrant C2,905,590744,067
Events in quadrant D6,988,491530,751

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220092
B0225332
C0130582
D0251322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63822003.133814%
B63824977.787527%
C638190.141044%
D6381146122.896098%

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 7572 6383 55 55 0.73% 0.86%
B 7572 6383 283 283 3.74% 4.43%
C 7571 6382 0 0 0.00% 0.00%
D 7571 6382 1302 1302 17.20% 20.40%

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 2941849 19556.84 725 711 150.4
A 0 247 99325 655.73 725 711 150.4
A 13 248 38738 252.86 725 711 150.4
B 3 112 1891152 13512.96 720 699 139.9
B 10 246 1268934 9065.34 720 699 139.9
B 5 171 46571 327.89 720 699 139.9
C 12 249 15561 85.51 737 741 173.3
C 3 233 7280 37.73 737 741 173.3
C 14 254 6186 31.42 737 741 173.3
D 2 37 3305788 19794.72 656 636 167.0
D 1 52 473935 2834.61 656 636 167.0
D 2 120 213017 1271.96 656 636 167.0

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