ASTROSAT CZTI

Data Quality Report

Orbit 20614

Creation date: 2024-06-27T18:17:25.639388
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/AS1A06_003T04_9000003046_20614cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20614cztM0_level2_quad_clean.evt
Size (bytes)511,133,76089,680,320
Size487.5 MB 85.5 MB
Events in quadrant A3,495,586572,211
Events in quadrant B3,410,422581,120
Events in quadrant C3,757,384559,338
Events in quadrant D4,373,745548,272

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146492
B0142632
C0152712
D0172542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65241051.609442%
B65241181.808706%
C65231642.514181%
D65233445.273647%

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 7509 6525 5 5 0.07% 0.08%
B 7509 6525 2 2 0.03% 0.03%
C 7508 6524 4 4 0.05% 0.06%
D 7508 6524 165 165 2.20% 2.53%

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 12 16 145486 853.36 839 821 169.5
A 5 16 83884 489.98 839 821 169.5
A 12 194 31793 182.7 839 821 169.5
B 0 189 32714 199.91 839 820 159.5
B 0 190 29572 180.22 839 820 159.5
B 0 219 23631 142.98 839 820 159.5
C 3 9 293771 1562.93 811 818 187.4
C 14 238 126050 668.13 811 818 187.4
C 8 208 92021 486.58 811 818 187.4
D 2 165 532528 2722.34 809 789 195.3
D 5 222 270779 1382.27 809 789 195.3
D 13 153 190599 971.77 809 789 195.3

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