ASTROSAT CZTI

Data Quality Report

Orbit 42668

Creation date: 2024-06-27T22:42:51.296726
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/AS1A05_013T01_9000005822_42668cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42668cztM0_level2_quad_clean.evt
Size (bytes)353,721,60097,424,640
Size337.3 MB 92.9 MB
Events in quadrant A3,406,564651,674
Events in quadrant B2,892,523660,741
Events in quadrant C3,176,361633,000
Events in quadrant D3,156,204589,990

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135942
B0125772
C0132582
D0135832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5934721.213347%
B5934250.421301%
C5934881.482979%
D5934801.348163%

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 7217 5935 52 52 0.72% 0.88%
B 7217 5935 16 16 0.22% 0.27%
C 7217 5935 80 80 1.11% 1.35%
D 7217 5935 76 76 1.05% 1.28%

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 638599 4688.84 655 640 136.1
A 15 223 163106 1194.09 655 640 136.1
A 13 248 52238 379.23 655 640 136.1
B 0 168 200519 1585.8 646 627 126.1
B 15 85 39543 308.73 646 627 126.1
B 5 255 35428 276.09 646 627 126.1
C 14 254 271239 1825.79 632 635 148.2
C 15 214 247646 1666.6 632 635 148.2
C 8 79 70399 470.7 632 635 148.2
D 2 249 227225 1457.59 636 616 155.5
D 1 47 225524 1446.65 636 616 155.5
D 12 233 64435 410.5 636 616 155.5

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