ASTROSAT CZTI

Data Quality Report

Orbit 54051

Creation date: 2025-09-25T01:09:23.482880
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_041T01_9000006510_54051cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54051cztM0_level2_quad_clean.evt
Size (bytes)614,370,24085,227,840
Size585.9 MB 81.3 MB
Events in quadrant A4,720,396619,823
Events in quadrant B7,950,016432,952
Events in quadrant C3,698,221592,182
Events in quadrant D5,878,444491,552

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185641
B0280692
C0155891
D0219351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63664226.628966%
B6366261141.014766%
C63662894.539742%
D636699015.551367%

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 7556 6367 344 344 4.55% 5.40%
B 7556 6366 1484 1484 19.64% 23.31%
C 7556 6367 265 265 3.51% 4.16%
D 7556 6367 844 844 11.17% 13.26%

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 12 115 1276704 7637.02 674 656 167.1
A 15 174 576195 3444.54 674 656 167.1
A 0 8 142616 849.62 674 656 167.1
B 5 250 3570104 31202.58 532 513 114.4
B 15 20 1342871 11733.85 532 513 114.4
B 5 236 491878 4295.13 532 513 114.4
C 1 241 504788 2770.22 661 655 182.0
C 13 3 243876 1336.51 661 655 182.0
C 12 2 194280 1063.97 661 655 182.0
D 8 176 2298002 13251.0 611 584 173.4
D 3 12 368126 2119.9 611 584 173.4
D 2 165 288210 1658.96 611 584 173.4

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