ASTROSAT CZTI

Data Quality Report

Orbit 17027

Creation date: 2024-06-27T17:30:59.827286
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/AS1A05_206T01_9000002528_17027cztM0_level2.evt modeM0/AS1A05_206T01_9000002528_17027cztM0_level2_quad_clean.evt
Size (bytes)193,582,08030,876,480
Size184.6 MB 29.4 MB
Events in quadrant A1,468,849182,298
Events in quadrant B1,672,517189,684
Events in quadrant C1,244,969187,927
Events in quadrant D1,296,089186,843

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062490
B066790
C053640
D057690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26201234.694656%
B2621702.670736%
C262170.267074%
D2621311.182755%

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 2621 2621 106 106 4.04% 4.04%
B 2622 2622 44 44 1.68% 1.68%
C 2622 2622 0 0 0.00% 0.00%
D 2622 2622 22 22 0.84% 0.84%

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 335491 5631.88 287 281 59.5
A 4 2 24471 406.42 287 281 59.5
A 12 189 4040 63.16 287 281 59.5
B 15 35 144674 2572.25 287 280 56.1
B 7 220 138984 2470.88 287 280 56.1
B 5 172 55081 976.23 287 280 56.1
C 3 233 108085 1639.47 276 277 65.8
C 14 238 42285 638.83 276 277 65.8
C 7 247 15345 229.14 276 277 65.8
D 1 52 80188 1144.49 282 271 69.8
D 10 70 73259 1045.26 282 271 69.8
D 2 33 37230 529.28 282 271 69.8

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