ASTROSAT CZTI

Data Quality Report

Orbit 56580

Creation date: 2026-03-14T04:26:59.279309
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_083T06_9000006558_56580cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56580cztM0_level2_quad_clean.evt
Size (bytes)475,346,88090,768,960
Size453.3 MB 86.6 MB
Events in quadrant A3,991,890615,496
Events in quadrant B2,891,038676,110
Events in quadrant C4,429,197532,161
Events in quadrant D5,799,556489,358

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162333
B0131112
C0178232
D0215622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62311572.519660%
B6232280.449294%
C62325999.611682%
D623275212.066752%

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 7451 6232 152 152 2.04% 2.44%
B 7452 6233 5 5 0.07% 0.08%
C 7452 6233 560 560 7.51% 8.98%
D 7452 6233 706 706 9.47% 11.33%

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 715136 4255.7 673 656 167.9
A 12 3 464349 2761.92 673 656 167.9
A 12 194 72862 430.08 673 656 167.9
B 7 252 47975 325.77 677 653 145.3
B 10 247 33455 225.81 677 653 145.3
B 8 128 29665 199.72 677 653 145.3
C 15 230 1785570 10412.24 621 615 171.4
C 6 223 93461 541.6 621 615 171.4
C 12 252 88644 513.5 621 615 171.4
D 8 129 959660 5544.81 608 580 173.0
D 6 239 847591 4896.9 608 580 173.0
D 8 240 511443 2953.49 608 580 173.0

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