ASTROSAT CZTI

Data Quality Report

Orbit 27424

Creation date: 2024-06-27T19:39:55.665885
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_249T01_9000003934_27424cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27424cztM0_level2_quad_clean.evt
Size (bytes)358,493,76062,285,760
Size341.9 MB 59.4 MB
Events in quadrant A2,302,966397,706
Events in quadrant B2,388,001393,282
Events in quadrant C2,683,733369,787
Events in quadrant D3,145,004377,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101580
B0103570
C0112380
D0127750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4952400.807754%
B4952470.949111%
C49521643.311793%
D49521723.473344%

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 5387 4953 2 2 0.04% 0.04%
B 5387 4953 0 0 0.00% 0.00%
C 5386 4952 76 76 1.41% 1.53%
D 5387 4953 125 125 2.32% 2.52%

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 13 254 8371 64.21 593 581 121.3
A 8 192 6987 52.8 593 581 121.3
A 3 137 5785 42.89 593 581 121.3
B 0 190 30311 259.46 586 571 114.6
B 0 189 17243 145.45 586 571 114.6
B 0 244 16602 139.86 586 571 114.6
C 2 16 323828 2435.39 559 563 132.7
C 14 238 88265 660.72 559 563 132.7
C 7 221 68164 509.29 559 563 132.7
D 1 52 712114 5168.27 568 552 137.7
D 2 250 147033 1063.93 568 552 137.7
D 10 50 86834 626.69 568 552 137.7

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