ASTROSAT CZTI

Data Quality Report

Orbit 00752

Creation date: 2024-06-27T14:02:28.570847
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_010T01_9000000108_00752cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00752cztM0_level2_quad_clean.evt
Size (bytes)1,082,436,48092,655,360
Size1.0 GB 88.4 MB
Events in quadrant A7,167,817615,788
Events in quadrant B7,620,460628,734
Events in quadrant C7,092,185605,276
Events in quadrant D10,487,231519,679

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256980
B0270570
C0254930
D0357290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A624260.096123%
B624250.080103%
C624220.032041%
D6242108417.366229%

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 7517 6243 145 145 1.93% 2.32%
B 7517 6243 207 207 2.75% 3.32%
C 7517 6243 119 119 1.58% 1.91%
D 7517 6243 1970 1970 26.21% 31.56%

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 15 233 13690 26.43 1859 1871 447.2
A 15 17 11143 20.73 1859 1871 447.2
A 12 189 10696 19.73 1859 1871 447.2
B 0 220 20235 39.67 1984 1995 459.8
B 5 249 12513 22.88 1984 1995 459.8
B 8 38 12337 22.49 1984 1995 459.8
C 15 241 43959 85.43 1781 1839 493.0
C 5 234 38453 74.26 1781 1839 493.0
C 3 111 25491 47.97 1781 1839 493.0
D 13 25 3893537 8017.9 1580 1635 485.4
D 12 22 157178 320.44 1580 1635 485.4
D 6 226 146445 298.33 1580 1635 485.4

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