ASTROSAT CZTI

Data Quality Report

Orbit 50119

Creation date: 2025-01-03T05:54:49.601816
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/AS1C09_003T01_9000006442_50119cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50119cztM0_level2_quad_clean.evt
Size (bytes)1,308,061,44058,322,880
Size1.2 GB 55.6 MB
Events in quadrant A15,333,781123,506
Events in quadrant B5,165,330665,529
Events in quadrant C13,056,048217,871
Events in quadrant D14,327,786272,513

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0503151
B0201781
C0435932
D0473861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6979582183.407365%
B69795037.207336%
C6978470467.411866%
D6978408758.569791%

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 7209 6981 5045 5045 69.98% 72.27%
B 7209 6981 366 366 5.08% 5.24%
C 7207 6978 3243 3243 45.00% 46.47%
D 7208 6980 4140 4140 57.44% 59.31%

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 6 250 5896940 49335.52 459 447 119.5
A 8 8 3776769 31596.2 459 447 119.5
A 4 13 1667327 13946.66 459 447 119.5
B 2 176 1322676 8979.05 701 677 147.2
B 5 185 214256 1450.63 701 677 147.2
B 4 216 203226 1375.72 701 677 147.2
C 4 111 7816633 70826.41 374 371 110.4
C 15 230 1398643 12670.33 374 371 110.4
C 15 147 410931 3720.26 374 371 110.4
D 12 191 3632095 22779.38 546 527 159.4
D 15 168 2318089 14537.14 546 527 159.4
D 15 106 2022275 12681.62 546 527 159.4

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