ASTROSAT CZTI

Data Quality Report

Orbit 37728

Creation date: 2024-06-27T21:43:41.872314
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/AS1A11_106T02_9000005344_37728cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37728cztM0_level2_quad_clean.evt
Size (bytes)734,601,60088,773,120
Size700.6 MB 84.7 MB
Events in quadrant A9,223,286528,079
Events in quadrant B2,979,600599,347
Events in quadrant C2,962,487609,522
Events in quadrant D6,688,280542,586

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313263
B0129262
C0124462
D0239462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5835222138.063410%
B5835861.473865%
C5835420.719794%
D5835120120.582691%

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 7208 5835 2191 2191 30.40% 37.55%
B 7207 5834 60 60 0.83% 1.03%
C 7207 5834 36 36 0.50% 0.62%
D 7207 5834 1186 1186 16.46% 20.33%

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 15 222 6497342 53833.42 595 585 120.7
A 10 83 315666 2610.82 595 585 120.7
A 9 143 75085 617.32 595 585 120.7
B 5 172 154534 1257.62 638 622 122.4
B 4 81 76699 621.63 638 622 122.4
B 5 255 63944 517.41 638 622 122.4
C 15 214 247485 1659.33 633 638 148.8
C 0 10 146939 983.45 633 638 148.8
C 14 254 36380 240.26 633 638 148.8
D 12 227 2942818 20623.94 584 570 142.7
D 2 249 342876 2399.42 584 570 142.7
D 1 47 289695 2026.65 584 570 142.7

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