ASTROSAT CZTI

Data Quality Report

Orbit 55169

Creation date: 2025-12-09T06:13:31.336700
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_022T16_9000006532_55169cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55169cztM0_level2_quad_clean.evt
Size (bytes)416,471,04096,105,600
Size397.2 MB 91.7 MB
Events in quadrant A3,967,038620,654
Events in quadrant B3,305,845666,764
Events in quadrant C3,846,015593,248
Events in quadrant D3,769,537556,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166592
B0149103
C0162412
D0160382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67871341.974363%
B67861562.298851%
C67861191.753610%
D6786971.429413%

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 9053 6789 124 124 1.37% 1.83%
B 9052 6788 41 41 0.45% 0.60%
C 9052 6788 77 77 0.85% 1.13%
D 9052 6788 87 87 0.96% 1.28%

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 3 78 706418 3909.28 731 714 180.5
A 12 115 312332 1726.22 731 714 180.5
A 4 3 45327 247.14 731 714 180.5
B 2 249 304343 1932.07 726 699 157.2
B 5 185 47182 295.77 726 699 157.2
B 0 182 29934 186.02 726 699 157.2
C 1 16 364149 1836.02 715 708 198.0
C 6 223 224868 1132.4 715 708 198.0
C 13 3 147748 742.81 715 708 198.0
D 11 129 505029 2506.82 708 679 201.2
D 2 31 211423 1047.48 708 679 201.2
D 11 176 110969 548.18 708 679 201.2

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