ASTROSAT CZTI

Data Quality Report

Orbit 00248

Creation date: 2024-06-27T13:58:24.721272
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/AS1P01_122T01_9000000026_00248cztM0_level2.evt modeM0/AS1P01_122T01_9000000026_00248cztM0_level2_quad_clean.evt
Size (bytes)803,707,20055,797,120
Size766.5 MB 53.2 MB
Events in quadrant A5,920,180334,645
Events in quadrant B6,379,307337,639
Events in quadrant C5,645,145330,077
Events in quadrant D6,042,379315,265

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213522
B0227021
C0205831
D0218031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A530650.094233%
B530690.169619%
C530640.075386%
D5306931.752733%

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 7011 5307 108 108 1.54% 2.04%
B 7011 5307 170 170 2.42% 3.20%
C 7011 5307 45 45 0.64% 0.85%
D 7011 5307 276 276 3.94% 5.20%

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 15 250 38097 110.59 1502 1491 331.0
A 15 127 31714 91.31 1502 1491 331.0
A 12 150 24181 68.55 1502 1491 331.0
B 2 32 413547 1150.89 1525 1531 358.0
B 0 214 91029 250.0 1525 1531 358.0
B 0 190 19529 50.27 1525 1531 358.0
C 1 1 78754 198.9 1408 1462 388.6
C 9 68 14467 33.47 1408 1462 388.6
C 9 54 13372 30.65 1408 1462 388.6
D 13 7 447922 1080.04 1316 1371 413.5
D 1 4 344792 830.61 1316 1371 413.5
D 10 154 111608 266.62 1316 1371 413.5

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