ASTROSAT CZTI

Data Quality Report

Orbit 33725

Creation date: 2024-06-27T20:51:50.667240
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_086T01_9000004816_33725cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33725cztM0_level2_quad_clean.evt
Size (bytes)487,759,68058,150,080
Size465.2 MB 55.5 MB
Events in quadrant A3,107,290348,331
Events in quadrant B3,466,487346,001
Events in quadrant C3,276,466347,920
Events in quadrant D4,549,112333,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126723
B0137412
C0131062
D0172282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5491851.547988%
B54912083.788017%
C5491691.256602%
D54913646.629029%

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 7344 5492 75 75 1.02% 1.37%
B 7344 5492 156 156 2.12% 2.84%
C 7344 5492 54 54 0.74% 0.98%
D 7344 5492 355 355 4.83% 6.46%

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 14 4 196736 1417.52 704 691 138.3
A 15 169 156297 1125.13 704 691 138.3
A 15 237 21455 150.14 704 691 138.3
B 5 172 532621 4072.45 697 682 130.6
B 15 85 72013 546.1 697 682 130.6
B 5 255 40318 303.45 697 682 130.6
C 0 10 264389 1678.71 690 697 157.1
C 15 214 238118 1511.47 690 697 157.1
C 14 67 38528 240.84 690 697 157.1
D 13 249 487623 2923.19 680 663 166.6
D 12 16 454929 2726.93 680 663 166.6
D 8 195 422978 2535.13 680 663 166.6

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