ASTROSAT CZTI

Data Quality Report

Orbit 12424

Creation date: 2024-06-27T16:27:09.668013
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/AS1A04_141T01_9000001848_12424cztM0_level2.evt modeM0/AS1A04_141T01_9000001848_12424cztM0_level2_quad_clean.evt
Size (bytes)195,845,76025,712,640
Size186.8 MB 24.5 MB
Events in quadrant A1,592,472148,703
Events in quadrant B1,387,474152,161
Events in quadrant C1,268,896152,993
Events in quadrant D1,510,516144,781

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063832
B056571
C053711
D060851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25031706.791850%
B25031526.072713%
C2503712.836596%
D25031074.274870%

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 2744 2504 4 4 0.15% 0.16%
B 2744 2505 7 7 0.26% 0.28%
C 2744 2505 0 0 0.00% 0.00%
D 2744 2505 20 20 0.73% 0.80%

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 13 251 186833 2757.04 323 314 67.7
A 1 162 56396 828.98 323 314 67.7
A 1 178 31103 455.11 323 314 67.7
B 4 239 61235 958.45 321 312 63.6
B 0 187 23501 364.81 321 312 63.6
B 0 190 21778 337.71 321 312 63.6
C 15 208 27439 357.01 316 316 76.0
C 8 128 3576 42.91 316 316 76.0
C 13 61 2299 26.1 316 316 76.0
D 1 52 204342 2609.27 317 307 78.2
D 13 104 29318 371.0 317 307 78.2
D 8 195 19855 249.99 317 307 78.2

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