ASTROSAT CZTI

Data Quality Report

Orbit 58890

Creation date: 2026-08-16T14:09:53.879474
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_004T07_9000006598_58890cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58890cztM0_level2_quad_clean.evt
Size (bytes)424,428,480101,301,120
Size404.8 MB 96.6 MB
Events in quadrant A3,552,698671,083
Events in quadrant B4,109,996705,157
Events in quadrant C3,138,347648,688
Events in quadrant D4,409,895593,865

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146602
B0163282
C0137502
D0172852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64291492.317623%
B64294056.299580%
C6429630.979935%
D64292533.935293%

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 7614 6430 54 54 0.71% 0.84%
B 7614 6430 256 256 3.36% 3.98%
C 7614 6430 10 10 0.13% 0.16%
D 7614 6430 213 213 2.80% 3.31%

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 15 233 361463 1923.5 761 743 187.5
A 14 238 171874 912.54 761 743 187.5
A 0 24 32118 167.3 761 743 187.5
B 6 255 824140 5133.74 740 711 160.4
B 5 185 99384 615.19 740 711 160.4
B 4 201 59390 365.84 740 711 160.4
C 12 252 177568 874.59 734 727 202.2
C 6 223 43019 209.16 734 727 202.2
C 3 233 37388 181.31 734 727 202.2
D 12 110 734608 3575.95 724 691 205.2
D 11 129 542500 2639.92 724 691 205.2
D 2 249 70505 340.16 724 691 205.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct