ASTROSAT CZTI

Data Quality Report

Orbit 57303

Creation date: 2026-05-01T19:28:23.619130
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_049T03_9000006570_57303cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57303cztM0_level2_quad_clean.evt
Size (bytes)441,063,36091,788,480
Size420.6 MB 87.5 MB
Events in quadrant A3,671,698606,367
Events in quadrant B3,739,323643,300
Events in quadrant C4,526,270555,203
Events in quadrant D3,895,890531,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151351
B0155111
C0179631
D0160111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63501131.779528%
B63501432.251969%
C63503846.047244%
D63502944.629921%

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 7295 6350 46 46 0.63% 0.72%
B 7295 6350 54 54 0.74% 0.85%
C 7295 6350 299 299 4.10% 4.71%
D 7295 6350 187 187 2.56% 2.94%

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 449518 2639.72 690 671 170.0
A 0 12 387226 2273.37 690 671 170.0
A 7 64 89001 519.48 690 671 170.0
B 0 171 510214 3531.39 672 646 144.3
B 5 185 360902 2496.64 672 646 144.3
B 10 247 68515 470.34 672 646 144.3
C 15 224 1330075 7536.43 648 644 176.4
C 12 2 289822 1639.32 648 644 176.4
C 14 96 133261 751.79 648 644 176.4
D 3 224 821483 4376.55 659 629 187.6
D 8 240 233618 1242.23 659 629 187.6
D 2 249 74244 392.49 659 629 187.6

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