ASTROSAT CZTI

Data Quality Report

Orbit 25646

Creation date: 2024-06-27T19:19:53.990299
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/AS1A09_013T02_9000003734_25646cztM0_level2.evt modeM0/AS1A09_013T02_9000003734_25646cztM0_level2_quad_clean.evt
Size (bytes)500,339,520105,419,520
Size477.2 MB 100.5 MB
Events in quadrant A3,503,650692,280
Events in quadrant B3,214,117707,061
Events in quadrant C3,263,699683,410
Events in quadrant D4,728,167654,306

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147170
B0139600
C0140590
D0185330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6536360.550796%
B6536420.642595%
C6536981.499388%
D65361502.294982%

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 7656 6537 0 0 0.00% 0.00%
B 7656 6537 1 1 0.01% 0.02%
C 7656 6537 0 0 0.00% 0.00%
D 7656 6537 81 81 1.06% 1.24%

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 8 192 376834 2327.6 810 795 161.6
A 13 254 10143 57.86 810 795 161.6
A 3 137 7274 40.1 810 795 161.6
B 12 111 18157 114.68 810 789 151.4
B 11 111 16181 101.63 810 789 151.4
B 3 112 14453 90.22 810 789 151.4
C 14 238 127612 690.08 791 794 183.8
C 3 233 46789 250.28 791 794 183.8
C 13 61 5364 24.87 791 794 183.8
D 8 195 844328 4434.53 791 767 190.2
D 1 52 728318 3824.67 791 767 190.2
D 2 244 122025 637.44 791 767 190.2

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