ASTROSAT CZTI

Data Quality Report

Orbit 54592

Creation date: 2025-10-31T16:07:23.798980
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_127T09_9000006520_54592cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54592cztM0_level2_quad_clean.evt
Size (bytes)596,514,240116,982,720
Size568.9 MB 111.6 MB
Events in quadrant A6,893,852741,864
Events in quadrant B4,130,520818,559
Events in quadrant C4,955,587729,623
Events in quadrant D5,471,218687,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263192
B0184582
C0204832
D0219943

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81256237.667692%
B81252683.298462%
C81252372.916923%
D81252302.830769%

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 9205 8128 339 339 3.68% 4.17%
B 9205 8128 32 32 0.35% 0.39%
C 9205 8128 156 156 1.69% 1.92%
D 9205 8128 163 163 1.77% 2.01%

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 2869465 13055.75 887 865 219.7
A 11 3 420547 1910.08 887 865 219.7
A 4 3 68649 308.5 887 865 219.7
B 10 14 234580 1196.58 902 869 195.3
B 10 247 127531 648.5 902 869 195.3
B 4 169 41580 208.44 902 869 195.3
C 13 3 506718 2098.38 882 877 241.1
C 9 38 316060 1307.47 882 877 241.1
C 15 254 245805 1016.03 882 877 241.1
D 3 12 655732 2617.05 876 836 250.2
D 2 172 423890 1690.58 876 836 250.2
D 8 160 298441 1189.27 876 836 250.2

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