ASTROSAT CZTI

Data Quality Report

Orbit 37725

Creation date: 2024-06-27T21:43:39.185152
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_37725cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37725cztM0_level2_quad_clean.evt
Size (bytes)692,449,92055,604,160
Size660.4 MB 53.0 MB
Events in quadrant A9,953,088296,824
Events in quadrant B3,338,745341,268
Events in quadrant C2,690,338360,449
Events in quadrant D4,650,936333,026

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330343
B0131332
C0108302
D0173142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5000292758.540000%
B50002254.500000%
C5000370.740000%
D50003116.220000%

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 7124 5001 3078 3078 43.21% 61.55%
B 7124 5000 166 166 2.33% 3.32%
C 7124 5000 27 27 0.38% 0.54%
D 7124 5000 325 325 4.56% 6.50%

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 7555578 71850.81 523 514 105.1
A 10 83 292629 2778.1 523 514 105.1
A 9 143 49774 468.48 523 514 105.1
B 5 255 471271 4310.0 581 568 109.2
B 5 172 143691 1310.51 581 568 109.2
B 4 171 109623 998.56 581 568 109.2
C 15 214 212176 1581.02 586 591 133.8
C 0 10 141003 1049.19 586 591 133.8
C 15 159 27293 199.52 586 591 133.8
D 12 227 1673805 11999.12 577 563 139.4
D 2 249 260412 1863.42 577 563 139.4
D 12 233 102066 727.9 577 563 139.4

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