ASTROSAT CZTI

Data Quality Report

Orbit 44777

Creation date: 2024-06-27T23:06:23.938615
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_004T12_9000006020_44777cztM0_level2.fits modeM0/AS1A13_004T12_9000006020_44777cztM0_level2_quad_clean.evt
Size (bytes)620,775,360103,363,200
Size592.0 MB 98.6 MB
Events in quadrant A7,616,581694,551
Events in quadrant B3,952,615754,056
Events in quadrant C3,102,989738,367
Events in quadrant D7,811,954496,875

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273144
B0160311
C0136961
D0276231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A638678512.292515%
B63872393.741976%
C6387330.516674%
D6387176727.665571%

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 7590 6385 640 640 8.43% 10.02%
B 7592 6387 151 151 1.99% 2.36%
C 7592 6388 13 13 0.17% 0.20%
D 7591 6387 1469 1469 19.35% 23.00%

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 15 223 2330894 15933.54 706 691 146.2
A 10 83 2098227 14342.6 706 691 146.2
A 13 248 383293 2616.17 706 691 146.2
B 0 189 510290 3616.67 724 701 140.9
B 5 255 238674 1688.95 724 701 140.9
B 0 219 166781 1178.71 724 701 140.9
C 12 250 99809 585.58 727 731 169.2
C 2 16 74376 435.26 727 731 169.2
C 14 254 55234 322.13 727 731 169.2
D 13 174 2765441 17491.57 629 611 158.1
D 2 249 710325 4489.97 629 611 158.1
D 13 249 441809 2791.22 629 611 158.1

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