ASTROSAT CZTI

Data Quality Report

Orbit 54909

Creation date: 2025-11-21T19:08:22.858172
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_014T01_9000006528_54909cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54909cztM0_level2_quad_clean.evt
Size (bytes)455,644,80094,029,120
Size434.5 MB 89.7 MB
Events in quadrant A3,652,680619,775
Events in quadrant B3,258,221669,404
Events in quadrant C5,452,381558,233
Events in quadrant D4,005,701553,306

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01516210
B0143582
C0205608
D0162962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64001241.937500%
B64021622.530459%
C63996169.626504%
D64011672.608967%

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 7502 6402 40 40 0.53% 0.62%
B 7502 6403 65 65 0.87% 1.02%
C 7501 6401 481 481 6.41% 7.51%
D 7501 6402 90 90 1.20% 1.41%

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 14 628612 3629.15 701 681 173.0
A 3 45 119418 686.25 701 681 173.0
A 0 8 83822 480.52 701 681 173.0
B 5 185 390731 2634.57 690 665 148.1
B 7 252 64738 432.76 690 665 148.1
B 5 236 18061 117.49 690 665 148.1
C 4 5 1686710 9365.34 657 649 180.0
C 9 38 412701 2288.77 657 649 180.0
C 13 3 255153 1413.66 657 649 180.0
D 11 129 362732 1879.8 679 650 192.6
D 15 94 156523 809.24 679 650 192.6
D 6 42 144787 748.31 679 650 192.6

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