ASTROSAT CZTI

Data Quality Report

Orbit 17466

Creation date: 2024-06-27T17:36:51.950228
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_067T01_9000002582_17466cztM0_level2.evt modeM0/AS1T03_067T01_9000002582_17466cztM0_level2_quad_clean.evt
Size (bytes)1,443,024,000278,475,840
Size1.3 GB 265.6 MB
Events in quadrant A9,116,1701,797,710
Events in quadrant B10,213,6591,820,409
Events in quadrant C9,200,1331,755,248
Events in quadrant D13,828,1251,691,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0406354
B0436704
C0403254
D0548864

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B04020
C04020
D04020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19901640.321592%
B199012101.055223%
C199011230.618059%
D199019204.622883%

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 22171 19904 9 9 0.04% 0.05%
B 22171 19904 82 82 0.37% 0.41%
C 22171 19904 0 0 0.00% 0.00%
D 22171 19904 718 718 3.24% 3.61%

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 88451 183.84 2322 2270 468.8
A 12 96 69802 144.06 2322 2270 468.8
A 0 226 20430 38.74 2322 2270 468.8
B 7 220 352177 804.6 2322 2263 434.9
B 0 230 202723 460.94 2322 2263 434.9
B 4 216 181315 411.72 2322 2263 434.9
C 14 238 344308 651.6 2244 2263 524.9
C 3 233 60400 110.75 2244 2263 524.9
C 5 218 30769 54.3 2244 2263 524.9
D 13 189 1732465 3202.39 2236 2172 540.3
D 12 233 1255244 2319.16 2236 2172 540.3
D 11 176 691231 1275.3 2236 2172 540.3

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