ASTROSAT CZTI

Data Quality Report

Orbit 16538

Creation date: 2024-06-27T17:24:07.059526
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/AS1T03_018T01_9000002442_16538cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16538cztM0_level2_quad_clean.evt
Size (bytes)1,297,033,920226,013,760
Size1.2 GB 215.5 MB
Events in quadrant A8,887,2071,413,343
Events in quadrant B10,326,5021,418,751
Events in quadrant C10,117,1861,406,626
Events in quadrant D8,742,1771,374,748

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380675
B0417144
C0413824
D0383414

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178712891.617145%
B178715092.848190%
C178713421.913715%
D178712231.247832%

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 19917 17872 66 66 0.33% 0.37%
B 19917 17872 245 245 1.23% 1.37%
C 19917 17872 26 26 0.13% 0.15%
D 19917 17872 60 60 0.30% 0.34%

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 15 174 528679 1225.76 2140 2092 429.6
A 3 1 111199 253.97 2140 2092 429.6
A 0 226 18812 38.92 2140 2092 429.6
B 0 85 538371 1318.63 2136 2080 406.7
B 7 220 381640 933.26 2136 2080 406.7
B 15 35 314523 768.23 2136 2080 406.7
C 3 233 1759717 3655.83 2057 2072 480.8
C 14 238 316430 653.85 2057 2072 480.8
C 7 247 22416 42.31 2057 2072 480.8
D 1 52 636643 1246.64 2085 2021 509.1
D 10 70 97954 188.45 2085 2021 509.1
D 2 234 66471 126.6 2085 2021 509.1

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