ASTROSAT CZTI

Data Quality Report

Orbit 09691

Creation date: 2024-06-27T15:49:33.199934
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_176T01_9000001378_09691cztM0_level2.evt modeM0/AS1T01_176T01_9000001378_09691cztM0_level2_quad_clean.evt
Size (bytes)207,348,48050,716,800
Size197.7 MB 48.4 MB
Events in quadrant A1,276,391340,805
Events in quadrant B1,339,480342,885
Events in quadrant C1,905,652333,038
Events in quadrant D1,572,662325,769

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0566951
B0585557
C0753789
D0650049

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2700331.222222%
B2699381.407929%
C2688190.706845%
D2702240.888231%

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 2738 2724 1 1 0.04% 0.04%
B 2738 2723 2 2 0.07% 0.07%
C 2738 2723 0 0 0.00% 0.00%
D 2738 2724 5 5 0.18% 0.18%

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 17191 243.13 326 319 69.4
A 12 236 3771 49.74 326 319 69.4
A 0 226 3136 40.59 326 319 69.4
B 0 187 22665 349.01 323 316 64.0
B 0 214 14533 222.02 323 316 64.0
B 10 245 11227 170.39 323 316 64.0
C 8 208 673996 9092.63 309 310 74.1
C 9 68 12754 167.95 309 310 74.1
C 8 128 5181 65.74 309 310 74.1
D 8 195 289520 3440.83 313 305 84.1
D 7 46 24867 292.22 313 305 84.1
D 7 71 22837 268.07 313 305 84.1

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