ASTROSAT CZTI

Data Quality Report

Orbit 40958

Creation date: 2024-06-27T22:22:43.615691
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/AS1A12_052T04_9000005582_40958cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40958cztM0_level2_quad_clean.evt
Size (bytes)337,484,16094,875,840
Size321.8 MB 90.5 MB
Events in quadrant A3,165,596642,414
Events in quadrant B2,503,000651,563
Events in quadrant C2,816,375616,577
Events in quadrant D3,548,275550,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129303
B0118112
C0121302
D0148402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A589270.118805%
B589250.084861%
C5892290.492193%
D58923285.566870%

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 8728 5894 1 1 0.01% 0.02%
B 8728 5894 0 0 0.00% 0.00%
C 8728 5894 20 20 0.23% 0.34%
D 8728 5894 214 214 2.45% 3.63%

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 522869 4006.91 637 624 130.3
A 12 189 159577 1219.56 637 624 130.3
A 10 255 14159 103.85 637 624 130.3
B 12 111 15710 122.05 633 615 123.7
B 11 111 14668 113.63 633 615 123.7
B 14 111 13934 107.69 633 615 123.7
C 15 214 272356 1858.42 624 626 146.2
C 0 10 87109 591.48 624 626 146.2
C 14 254 20692 137.24 624 626 146.2
D 13 249 925706 6294.86 602 586 147.0
D 2 249 166294 1127.54 602 586 147.0
D 13 171 55499 373.65 602 586 147.0

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