ASTROSAT CZTI

Data Quality Report

Orbit 57075

Creation date: 2026-04-16T12:57:59.534732
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_57075cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57075cztM0_level2_quad_clean.evt
Size (bytes)468,800,64093,911,040
Size447.1 MB 89.6 MB
Events in quadrant A3,052,895635,734
Events in quadrant B3,526,703664,993
Events in quadrant C6,538,813527,716
Events in quadrant D3,736,544567,347

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136471
B0149511
C0237361
D0152781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6415881.371785%
B64162814.379676%
C641698415.336658%
D6416991.543017%

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 7485 6415 23 23 0.31% 0.36%
B 7486 6416 84 84 1.12% 1.31%
C 7486 6416 802 802 10.71% 12.50%
D 7486 6416 27 27 0.36% 0.42%

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 4 249 174043 1000.53 711 694 173.3
A 4 13 71610 409.31 711 694 173.3
A 13 248 31186 175.99 711 694 173.3
B 10 16 379825 2566.19 692 668 147.8
B 4 171 221007 1491.29 692 668 147.8
B 0 63 39808 264.91 692 668 147.8
C 15 198 2490625 13947.74 659 655 178.5
C 1 16 948758 5310.87 659 655 178.5
C 12 254 227344 1269.81 659 655 178.5
D 15 142 645940 3365.35 689 657 191.7
D 12 33 177217 920.81 689 657 191.7
D 2 249 44583 229.09 689 657 191.7

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