ASTROSAT CZTI

Data Quality Report

Orbit 51301

Creation date: 2025-03-23T20:42:30.315303
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_001T03_9000006456_51301cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51301cztM0_level2_quad_clean.evt
Size (bytes)912,479,04083,888,640
Size870.2 MB 80.0 MB
Events in quadrant A6,213,220624,290
Events in quadrant B6,055,967670,341
Events in quadrant C15,293,853200,535
Events in quadrant D5,675,399558,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233211
B0227991
C0501681
D0217641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69743555.090336%
B69735838.360820%
C6973500571.776854%
D69744145.936335%

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 7744 6975 134 134 1.73% 1.92%
B 7743 6974 292 292 3.77% 4.19%
C 7742 6971 4472 4472 57.76% 64.15%
D 7744 6975 252 252 3.25% 3.61%

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 1920576 10598.78 736 718 181.1
A 9 191 290175 1597.98 736 718 181.1
A 12 250 256246 1410.67 736 718 181.1
B 10 254 1604606 10377.25 726 702 154.6
B 5 172 633457 4093.92 726 702 154.6
B 5 185 198082 1277.05 726 702 154.6
C 4 12 11607782 108438.01 383 379 107.0
C 15 219 1162369 10855.48 383 379 107.0
C 12 247 303661 2833.3 383 379 107.0
D 8 176 1705900 8610.76 708 683 198.0
D 2 62 214871 1081.58 708 683 198.0
D 12 128 160515 807.1 708 683 198.0

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