ASTROSAT CZTI

Data Quality Report

Orbit 57614

Creation date: 2026-05-22T18:54:53.319863
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_070T08_9000006576_57614cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57614cztM0_level2_quad_clean.evt
Size (bytes)408,055,680102,386,880
Size389.2 MB 97.6 MB
Events in quadrant A3,273,326665,522
Events in quadrant B3,331,849715,030
Events in quadrant C4,057,905639,934
Events in quadrant D3,899,021594,068

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145411
B0149891
C0169591
D0165822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69721121.606426%
B69721391.993689%
C69721682.409639%
D69722453.514056%

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 7612 6973 8 8 0.11% 0.11%
B 7612 6973 34 34 0.45% 0.49%
C 7612 6974 82 82 1.08% 1.18%
D 7612 6974 164 164 2.15% 2.35%

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 268764 1438.45 753 732 186.3
A 4 13 27086 141.43 753 732 186.3
A 7 160 24348 126.74 753 732 186.3
B 10 247 139121 881.17 740 712 157.1
B 7 252 56709 356.5 740 712 157.1
B 5 185 52648 330.65 740 712 157.1
C 15 224 658062 3299.18 727 720 199.2
C 9 38 319055 1597.71 727 720 199.2
C 10 21 84145 418.71 727 720 199.2
D 15 142 515093 2517.75 724 690 204.3
D 7 96 158189 770.88 724 690 204.3
D 2 249 64331 311.49 724 690 204.3

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