ASTROSAT CZTI

Data Quality Report

Orbit 55303

Creation date: 2025-12-18T06:32:07.961044
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_009T01_9000006534_55303cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55303cztM0_level2_quad_clean.evt
Size (bytes)387,290,88089,732,160
Size369.3 MB 85.6 MB
Events in quadrant A3,307,318583,963
Events in quadrant B3,158,104613,827
Events in quadrant C3,503,964549,972
Events in quadrant D3,833,606491,868

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01422
C01422
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01508618
B01476322
C01583720
D01658926

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0191
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6847781.139185%
B6846911.329243%
C68471732.526654%
D68451261.840760%

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 7962 7123 60 60 0.75% 0.84%
B 7962 7123 26 26 0.33% 0.37%
C 7962 7123 137 137 1.72% 1.92%
D 7962 7108 131 131 1.65% 1.84%

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 0 8 346332 1967.98 707 688 175.6
A 12 18 96009 542.72 707 688 175.6
A 4 3 23635 130.65 707 688 175.6
B 7 252 85613 562.43 702 675 151.0
B 0 199 75328 494.33 702 675 151.0
B 9 251 45018 293.63 702 675 151.0
C 12 249 317991 1662.66 691 684 190.8
C 13 3 175602 916.56 691 684 190.8
C 14 254 76623 397.91 691 684 190.8
D 11 129 310849 1572.34 689 656 197.3
D 6 239 222073 1122.35 689 656 197.3
D 11 176 206871 1045.29 689 656 197.3

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