ASTROSAT CZTI

Data Quality Report

Orbit 41350

Creation date: 2024-06-27T22:28:00.739956
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/AS1T05_105T01_9000005658_41350cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41350cztM0_level2_quad_clean.evt
Size (bytes)444,565,44093,015,360
Size424.0 MB 88.7 MB
Events in quadrant A3,156,567658,453
Events in quadrant B2,779,084667,797
Events in quadrant C3,348,703602,284
Events in quadrant D6,708,943472,244

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128483
B0122842
C0135472
D0240412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5951130.218451%
B5951180.302470%
C59512253.780877%
D5951128321.559402%

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 7233 5950 6 6 0.08% 0.10%
B 7233 5950 5 5 0.07% 0.08%
C 7234 5951 221 221 3.06% 3.71%
D 7233 5950 1280 1280 17.70% 21.51%

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 549328 4020.34 661 648 136.5
A 13 248 28952 207.39 661 648 136.5
A 12 189 14528 101.7 661 648 136.5
B 0 190 83427 644.92 655 636 128.4
B 5 255 81648 631.06 655 636 128.4
B 0 155 28422 216.45 655 636 128.4
C 0 10 644295 4361.49 624 628 147.6
C 15 214 248650 1680.6 624 628 147.6
C 5 128 11003 70.3 624 628 147.6
D 12 217 2405007 16933.86 572 556 142.0
D 13 249 1024926 7214.34 572 556 142.0
D 1 52 344450 2421.95 572 556 142.0

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