ASTROSAT CZTI

Data Quality Report

Orbit 55155

Creation date: 2025-12-08T09:14:24.933668
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/AS1A14_022T16_9000006532_55155cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55155cztM0_level2_quad_clean.evt
Size (bytes)400,504,32094,800,960
Size382.0 MB 90.4 MB
Events in quadrant A3,024,023626,556
Events in quadrant B3,027,406675,002
Events in quadrant C4,435,880583,592
Events in quadrant D3,845,053543,523

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137132
B0136782
C0174552
D0161652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6336510.804924%
B6336791.246843%
C63362383.756313%
D63362483.914141%

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 7506 6336 24 24 0.32% 0.38%
B 7506 6336 23 23 0.31% 0.36%
C 7506 6336 208 208 2.77% 3.28%
D 7506 6337 272 272 3.62% 4.29%

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 3 78 309701 1842.25 681 664 167.7
A 12 115 19173 110.34 681 664 167.7
A 4 157 13285 75.24 681 664 167.7
B 5 185 104935 720.65 678 656 144.7
B 4 81 81732 560.3 678 656 144.7
B 2 249 79584 545.45 678 656 144.7
C 13 3 708728 3925.57 655 649 180.4
C 9 38 573822 3177.65 655 649 180.4
C 6 223 202528 1119.21 655 649 180.4
D 3 12 597022 3237.38 643 614 184.2
D 2 172 234948 1271.99 643 614 184.2
D 11 129 97431 525.53 643 614 184.2

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