ASTROSAT CZTI

Data Quality Report

Orbit 50576

Creation date: 2025-02-03T01:22:18.439377
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/AS1T05_239T01_9000006444_50576cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50576cztM0_level2_quad_clean.evt
Size (bytes)550,324,80087,750,720
Size524.8 MB 83.7 MB
Events in quadrant A3,599,290583,612
Events in quadrant B6,682,832574,205
Events in quadrant C5,274,955539,405
Events in quadrant D4,326,777520,498

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150691
B0242281
C0199781
D0173881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62881652.624046%
B628982013.038639%
C62894667.409763%
D62892483.943393%

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 7288 6289 140 140 1.92% 2.23%
B 7289 6290 651 651 8.93% 10.35%
C 7289 6290 399 399 5.47% 6.34%
D 7289 6290 244 244 3.35% 3.88%

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 4 249 275577 1705.29 650 633 161.2
A 8 38 219800 1359.35 650 633 161.2
A 12 250 154770 956.01 650 633 161.2
B 4 170 2992154 22341.96 625 604 133.9
B 0 229 358536 2673.16 625 604 133.9
B 3 249 240382 1790.75 625 604 133.9
C 15 196 694036 4023.47 628 624 172.3
C 12 252 440962 2555.03 628 624 172.3
C 13 3 225987 1307.65 628 624 172.3
D 8 48 475830 2698.53 633 610 176.1
D 8 246 437480 2480.76 633 610 176.1
D 6 42 187345 1060.37 633 610 176.1

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