ASTROSAT CZTI

Data Quality Report

Orbit 11675

Creation date: 2024-06-27T16:16:54.113430
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/AS1T01_207T01_9000001720_11675cztM0_level2.evt modeM0/AS1T01_207T01_9000001720_11675cztM0_level2_quad_clean.evt
Size (bytes)1,610,956,800252,126,720
Size1.5 GB 240.4 MB
Events in quadrant A14,196,1341,565,095
Events in quadrant B12,362,4561,586,335
Events in quadrant C9,091,9611,580,774
Events in quadrant D11,770,4721,508,967

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0561725
B0502625
C0415215
D0487245

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04140
B04140
C04140
D04140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2024310975.419157%
B2024311225.542657%
C202431690.834856%
D202436523.220866%

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 21654 20251 322 322 1.49% 1.59%
B 21654 20251 327 327 1.51% 1.61%
C 21654 20251 0 0 0.00% 0.00%
D 21654 20250 393 393 1.81% 1.94%

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 8 5 3090576 6418.88 2361 2313 481.1
A 1 162 746957 1547.72 2361 2313 481.1
A 1 178 437407 904.33 2361 2313 481.1
B 4 239 2050026 4545.88 2362 2302 450.5
B 3 64 493396 1090.21 2362 2302 450.5
B 15 204 360298 794.74 2362 2302 450.5
C 13 61 17206 27.75 2331 2336 535.9
C 12 4 6023 6.88 2331 2336 535.9
C 3 202 5866 6.59 2331 2336 535.9
D 13 104 1720370 3121.57 2294 2230 550.4
D 8 195 511579 925.4 2294 2230 550.4
D 1 52 348576 629.25 2294 2230 550.4

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