ASTROSAT CZTI

Data Quality Report

Orbit 53154

Creation date: 2025-07-26T15:11:58.494364
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_011T07_9000006488_53154cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53154cztM0_level2_quad_clean.evt
Size (bytes)543,343,680103,884,480
Size518.2 MB 99.1 MB
Events in quadrant A3,904,933677,354
Events in quadrant B4,094,681726,042
Events in quadrant C6,209,652629,260
Events in quadrant D5,332,188600,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172191
B0177151
C0236951
D0210291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73642202.987507%
B73642213.001086%
C73644486.083650%
D73644105.567626%

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 7629 7365 107 107 1.40% 1.45%
B 7629 7365 65 65 0.85% 0.88%
C 7629 7365 345 345 4.52% 4.68%
D 7629 7365 329 329 4.31% 4.47%

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 12 3 446385 2362.15 759 742 188.7
A 0 8 300285 1587.74 759 742 188.7
A 12 194 61357 321.29 759 742 188.7
B 10 254 402648 2518.69 748 722 159.6
B 2 249 180474 1126.42 748 722 159.6
B 4 81 149249 930.75 748 722 159.6
C 15 224 1201934 6055.42 720 712 198.4
C 7 80 550533 2771.67 720 712 198.4
C 0 240 462301 2326.89 720 712 198.4
D 8 176 1298171 6426.32 718 686 201.9
D 10 172 263098 1299.7 718 686 201.9
D 2 120 227462 1123.2 718 686 201.9

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