ASTROSAT CZTI

Data Quality Report

Orbit 27960

Creation date: 2024-06-27T19:46:27.004070
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/AS1A10_021T02_9000004036_27960cztM0_level2.evt modeM0/AS1A10_021T02_9000004036_27960cztM0_level2_quad_clean.evt
Size (bytes)432,843,84071,147,520
Size412.8 MB 67.9 MB
Events in quadrant A2,377,447466,890
Events in quadrant B2,999,097467,270
Events in quadrant C2,426,829448,120
Events in quadrant D4,953,245408,637

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104530
B0122350
C0104700
D0181620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5189110.211987%
B5189420.809405%
C5189390.751590%
D518959811.524378%

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 5189 5189 0 0 0.00% 0.00%
B 5189 5189 9 9 0.17% 0.17%
C 5189 5189 0 0 0.00% 0.00%
D 5189 5189 567 567 10.93% 10.93%

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 13 254 8777 65.69 615 601 124.5
A 3 137 5895 42.53 615 601 124.5
A 0 226 5123 36.33 615 601 124.5
B 10 245 553044 4711.53 611 596 117.3
B 0 190 19126 158.03 611 596 117.3
B 12 111 14452 118.17 611 596 117.3
C 14 238 95893 683.91 594 598 139.3
C 3 233 8585 57.32 594 598 139.3
C 10 22 5446 34.79 594 598 139.3
D 7 80 1319095 9599.29 574 558 137.4
D 1 52 1244265 9054.51 574 558 137.4
D 12 233 84727 612.77 574 558 137.4

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