ASTROSAT CZTI

Data Quality Report

Orbit 15488

Creation date: 2024-06-27T17:09:25.370805
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/AS1G08_043T01_9000002288_15488cztM0_level2.evt modeM0/AS1G08_043T01_9000002288_15488cztM0_level2_quad_clean.evt
Size (bytes)418,219,200106,571,520
Size398.8 MB 101.6 MB
Events in quadrant A2,858,523726,667
Events in quadrant B3,148,492722,657
Events in quadrant C2,931,719696,677
Events in quadrant D3,339,167682,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119811
B0127580
C0120540
D0136450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5706921.612338%
B57061141.997897%
C57061001.752541%
D57061813.172100%

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 7007 5708 1 1 0.01% 0.02%
B 7007 5708 18 18 0.26% 0.32%
C 7007 5708 0 0 0.00% 0.00%
D 7006 5707 100 100 1.43% 1.75%

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 13 248 10003 63.37 734 720 146.5
A 15 249 7442 45.88 734 720 146.5
A 14 238 7256 44.62 734 720 146.5
B 4 142 70956 527.98 720 705 133.1
B 0 189 50586 374.89 720 705 133.1
B 7 220 43559 322.08 720 705 133.1
C 3 233 136781 858.67 687 690 158.5
C 14 238 109993 689.65 687 690 158.5
C 13 61 4920 26.69 687 690 158.5
D 5 222 376037 2211.51 703 683 169.7
D 1 52 69523 405.59 703 683 169.7
D 7 38 52863 307.43 703 683 169.7

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