ASTROSAT CZTI

Data Quality Report

Orbit 54853

Creation date: 2025-11-18T00:03:57.042477
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_039T06_9000006526_54853cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54853cztM0_level2_quad_clean.evt
Size (bytes)419,708,160102,473,280
Size400.3 MB 97.7 MB
Events in quadrant A3,472,976670,534
Events in quadrant B3,384,993716,552
Events in quadrant C3,817,351627,634
Events in quadrant D4,306,635591,823

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155392
B0153623
C0165862
D0178392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71211672.345176%
B71201692.373596%
C71202503.511236%
D71202783.904494%

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 7836 7122 35 35 0.45% 0.49%
B 7835 7120 19 19 0.24% 0.27%
C 7835 7121 126 126 1.61% 1.77%
D 7835 7121 149 149 1.90% 2.09%

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 8 206 113360 580.11 788 770 194.1
A 13 248 71354 363.68 788 770 194.1
A 0 8 63592 323.69 788 770 194.1
B 5 185 220944 1314.3 773 742 167.5
B 10 247 58456 344.47 773 742 167.5
B 12 111 20178 116.01 773 742 167.5
C 14 254 463307 2225.27 762 755 207.9
C 12 252 125151 598.45 762 755 207.9
C 12 250 65537 311.65 762 755 207.9
D 3 12 305250 1409.11 762 732 216.1
D 10 181 295939 1366.02 762 732 216.1
D 11 176 198403 914.69 762 732 216.1

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