ASTROSAT CZTI

Data Quality Report

Orbit 21685

Creation date: 2024-06-27T18:31:05.467061
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_143T01_9000003208_21685cztM0_level2.evt modeM0/AS1T03_143T01_9000003208_21685cztM0_level2_quad_clean.evt
Size (bytes)250,971,84023,765,760
Size239.3 MB 22.7 MB
Events in quadrant A1,406,687140,928
Events in quadrant B1,455,491145,877
Events in quadrant C1,429,679139,208
Events in quadrant D3,119,15694,936

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057061
B058501
C057581
D0111321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A276340.144770%
B2763160.579081%
C2763220.796236%
D276352118.856316%

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 2763 2763 0 0 0.00% 0.00%
B 2763 2763 1 1 0.04% 0.04%
C 2763 2763 0 0 0.00% 0.00%
D 2763 2763 470 470 17.01% 17.01%

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 15 236 13363 176.98 361 354 73.5
A 13 254 5168 65.49 361 354 73.5
A 0 226 3119 37.62 361 354 73.5
B 0 229 17884 253.18 362 354 69.2
B 12 111 7977 110.1 362 354 69.2
B 3 64 7916 109.22 362 354 69.2
C 14 238 56845 682.27 351 354 82.8
C 13 61 2487 25.76 351 354 82.8
C 10 22 1777 17.19 351 354 82.8
D 1 20 1156661 14768.62 320 310 78.3
D 7 238 474129 6051.5 320 310 78.3
D 2 136 84751 1078.46 320 310 78.3

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