ASTROSAT CZTI

Data Quality Report

Orbit 40885

Creation date: 2024-06-27T22:21:46.138669
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_097T01_9000005574_40885cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40885cztM0_level2_quad_clean.evt
Size (bytes)372,672,00092,756,160
Size355.4 MB 88.5 MB
Events in quadrant A3,174,931616,920
Events in quadrant B3,643,404631,593
Events in quadrant C2,773,860613,339
Events in quadrant D3,755,880545,170

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127863
B0146522
C0117392
D0150622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A574690.156631%
B57461913.324052%
C5746150.261051%
D57461873.254438%

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 7119 5747 5 5 0.07% 0.09%
B 7119 5747 111 111 1.56% 1.93%
C 7119 5747 5 5 0.07% 0.09%
D 7119 5747 153 153 2.15% 2.66%

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 564793 4343.92 632 617 129.9
A 12 189 131903 1010.85 632 617 129.9
A 2 79 14602 107.68 632 617 129.9
B 5 255 545211 4429.4 628 611 123.0
B 4 171 446227 3624.33 628 611 123.0
B 0 190 101738 822.5 628 611 123.0
C 15 214 245882 1679.96 620 624 146.0
C 0 10 64519 437.66 620 624 146.0
C 10 70 37226 250.71 620 624 146.0
D 12 79 438753 2913.3 607 590 150.4
D 2 249 379510 2519.4 607 590 150.4
D 13 249 180327 1195.05 607 590 150.4

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