ASTROSAT CZTI

Data Quality Report

Orbit 50766

Creation date: 2025-02-15T20:04:24.195090
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/AS1C07_001T01_9000006450_50766cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50766cztM0_level2_quad_clean.evt
Size (bytes)592,666,56088,208,640
Size565.2 MB 84.1 MB
Events in quadrant A5,453,052579,931
Events in quadrant B5,948,325589,273
Events in quadrant C4,984,402547,065
Events in quadrant D5,061,438511,162

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205581
B0220221
C0191301
D0193851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63453104.885737%
B634586213.585500%
C63464256.697132%
D63463685.798928%

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 7275 6347 202 202 2.78% 3.18%
B 7275 6347 538 538 7.40% 8.48%
C 7276 6348 304 304 4.18% 4.79%
D 7276 6348 277 277 3.81% 4.36%

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 4 4 1517070 9012.78 668 650 168.3
A 6 195 525847 3121.49 668 650 168.3
A 11 3 190585 1128.87 668 650 168.3
B 4 206 2901144 21068.42 640 618 137.7
B 7 0 83034 598.64 640 618 137.7
B 10 247 58504 420.46 640 618 137.7
C 1 44 655352 3690.77 641 632 177.4
C 9 38 463585 2609.74 641 632 177.4
C 5 10 437621 2463.38 641 632 177.4
D 2 216 621439 3484.63 636 616 178.2
D 15 174 228040 1276.51 636 616 178.2
D 2 249 224797 1258.31 636 616 178.2

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