ASTROSAT CZTI

Data Quality Report

Orbit 56152

Creation date: 2026-02-13T11:46:45.192048
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_083T04_9000006550_56152cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56152cztM0_level2_quad_clean.evt
Size (bytes)1,695,432,960178,058,880
Size1.6 GB 169.8 MB
Events in quadrant A27,063,403891,643
Events in quadrant B10,440,4711,167,797
Events in quadrant C11,573,1801,003,588
Events in quadrant D12,177,076983,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0941894
B0453293
C0491363
D0500123

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19471640632.900211%
B194725913.035127%
C194729965.115037%
D194724282.198028%

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 21090 19711 5663 5663 26.85% 28.73%
B 21091 19920 209 209 0.99% 1.05%
C 21091 19921 825 825 3.91% 4.14%
D 21091 19921 351 351 1.66% 1.76%

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 9 250 14293430 32926.79 1778 1739 434.0
A 3 14 3734814 8600.67 1778 1739 434.0
A 15 32 898941 2067.07 1778 1739 434.0
B 5 185 930731 2126.63 2052 1977 436.7
B 0 153 234201 531.74 2052 1977 436.7
B 4 171 203702 461.9 2052 1977 436.7
C 12 254 2669166 4902.14 1986 1965 544.1
C 6 223 608145 1114.12 1986 1965 544.1
C 12 252 273378 498.84 1986 1965 544.1
D 8 240 1776854 3165.32 1999 1906 560.7
D 2 62 503860 895.15 1999 1906 560.7
D 2 120 436657 775.3 1999 1906 560.7

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