ASTROSAT CZTI

Data Quality Report

Orbit 21130

Creation date: 2024-06-27T18:23:53.319030
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_104T05_9000003120_21130cztM0_level2.evt modeM0/AS1A05_104T05_9000003120_21130cztM0_level2_quad_clean.evt
Size (bytes)1,695,936,960271,509,120
Size1.6 GB 258.9 MB
Events in quadrant A10,066,6811,769,964
Events in quadrant B11,380,2711,762,820
Events in quadrant C9,861,7021,683,159
Events in quadrant D18,642,2021,567,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04260
B04260
C04260
D04260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0435953
B0470813
C0429463
D0695843

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209075432.597216%
B209087603.634972%
C209085752.750143%
D2090819869.498756%

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 21652 20911 0 0 0.00% 0.00%
B 21653 20911 112 112 0.52% 0.54%
C 21653 20912 0 0 0.00% 0.00%
D 21652 20911 1546 1546 7.14% 7.39%

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 15 192 256764 498.48 2538 2477 510.1
A 13 254 26035 46.18 2538 2477 510.1
A 0 226 22035 38.34 2538 2477 510.1
B 7 220 800412 1665.85 2523 2457 479.0
B 0 228 162939 335.03 2523 2457 479.0
B 0 182 137204 281.3 2523 2457 479.0
C 14 238 375752 654.42 2426 2442 570.4
C 13 61 17212 25.89 2426 2442 570.4
C 9 54 13000 18.51 2426 2442 570.4
D 5 222 3242109 5542.98 2399 2331 584.5
D 1 239 3014163 5152.98 2399 2331 584.5
D 1 20 1817497 3105.59 2399 2331 584.5

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