ASTROSAT CZTI

Data Quality Report

Orbit 52907

Creation date: 2025-07-16T19:52:25.541650
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/AS1C09_011T06_9000006484_52907cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52907cztM0_level2_quad_clean.evt
Size (bytes)838,872,00071,421,120
Size800.0 MB 68.1 MB
Events in quadrant A15,576,00222,992
Events in quadrant B4,352,259635,119
Events in quadrant C3,855,416566,830
Events in quadrant D6,776,887494,767

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505109
B0172592
C0160002
D0245612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6337616197.222661%
B63382373.739350%
C63381973.108236%
D6338102016.093405%

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 6817 6339 5778 5778 84.76% 91.15%
B 6818 6340 162 162 2.38% 2.56%
C 6818 6340 116 116 1.70% 1.83%
D 6818 6340 969 969 14.21% 15.28%

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 9 191 14078656 215966.13 251 244 65.2
A 12 17 180249 2761.32 251 244 65.2
A 0 8 89949 1376.1 251 244 65.2
B 8 128 986742 7101.4 656 633 138.9
B 4 158 300759 2161.34 656 633 138.9
B 12 32 160139 1148.67 656 633 138.9
C 7 80 565499 3176.38 648 640 177.8
C 15 224 183034 1025.66 648 640 177.8
C 2 12 113630 635.38 648 640 177.8
D 8 176 2050072 11541.92 618 589 177.6
D 15 125 1187962 6686.84 618 589 177.6
D 15 174 354986 1995.83 618 589 177.6

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