ASTROSAT CZTI

Data Quality Report

Orbit 53377

Creation date: 2025-08-11T12:00:05.660732
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_011T09_9000006494_53377cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53377cztM0_level2_quad_clean.evt
Size (bytes)2,117,039,040234,282,240
Size2.0 GB 223.4 MB
Events in quadrant A14,039,7941,640,807
Events in quadrant B16,091,2551,735,116
Events in quadrant C35,921,750830,246
Events in quadrant D10,839,5311,570,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0553523
B0609813
C01196053
D0462793

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1909617088.944282%
B19096208110.897570%
C190961029153.890867%
D190965322.785924%

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 20106 19099 1205 1205 5.99% 6.31%
B 20106 19099 1080 1080 5.37% 5.65%
C 20106 19099 9510 9510 47.30% 49.79%
D 20106 19099 321 321 1.60% 1.68%

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 62 2713365 5585.36 1957 1907 485.5
A 15 174 1550008 3188.95 1957 1907 485.5
A 4 249 538175 1104.66 1957 1907 485.5
B 4 206 3315958 7996.61 1939 1866 414.4
B 2 249 1374217 3311.36 1939 1866 414.4
B 4 171 1034678 2492.08 1939 1866 414.4
C 1 241 18134130 48583.5 1362 1351 373.2
C 15 178 8149758 21832.18 1362 1351 373.2
C 15 224 2905106 7780.08 1362 1351 373.2
D 7 70 603712 1099.28 1943 1857 547.5
D 2 249 583521 1062.4 1943 1857 547.5
D 12 17 451858 821.92 1943 1857 547.5

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