ASTROSAT CZTI

Data Quality Report

Orbit 57149

Creation date: 2026-04-21T13:27:17.205164
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_083T10_9000006566_57149cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57149cztM0_level2_quad_clean.evt
Size (bytes)709,168,32090,895,680
Size676.3 MB 86.7 MB
Events in quadrant A3,069,904681,371
Events in quadrant B4,371,724688,303
Events in quadrant C12,955,734296,899
Events in quadrant D5,303,429592,378

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145622
B0178512
C0433782
D0204952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70801011.426554%
B70805017.076271%
C7080432561.087571%
D70804215.946328%

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 7730 7082 2 2 0.03% 0.03%
B 7730 7082 262 262 3.39% 3.70%
C 7730 7082 3467 3467 44.85% 48.96%
D 7730 7082 299 299 3.87% 4.22%

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 4 207 25900 133.47 775 756 188.4
A 3 14 15305 77.23 775 756 188.4
A 13 254 10787 53.25 775 756 188.4
B 10 16 1201274 7629.2 737 708 157.4
B 0 213 58952 370.12 737 708 157.4
B 10 247 49188 308.07 737 708 157.4
C 15 198 10311933 67648.6 562 556 152.4
C 9 38 170483 1114.82 562 556 152.4
C 12 252 59485 386.61 562 556 152.4
D 12 33 1638386 7828.76 740 708 209.2
D 15 142 201328 959.04 740 708 209.2
D 2 120 197316 939.87 740 708 209.2

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