ASTROSAT CZTI

Data Quality Report

Orbit 42864

Creation date: 2024-06-27T22:45:07.953705
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/AS1T05_138T01_9000005828_42864cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42864cztM0_level2_quad_clean.evt
Size (bytes)347,149,44090,613,440
Size331.1 MB 86.4 MB
Events in quadrant A3,435,272610,758
Events in quadrant B2,571,023626,446
Events in quadrant C2,874,301607,596
Events in quadrant D3,562,735532,883

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134312
B0111192
C0118352
D0142082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5226761.454267%
B5227460.880046%
C5227951.817486%
D52272965.662904%

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 7169 5227 67 67 0.93% 1.28%
B 7170 5228 23 23 0.32% 0.44%
C 7170 5228 83 83 1.16% 1.59%
D 7170 5228 266 266 3.71% 5.09%

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 10 83 620225 5163.68 586 576 120.0
A 13 248 303958 2528.15 586 576 120.0
A 12 189 110767 918.25 586 576 120.0
B 4 67 106562 936.82 584 567 113.1
B 5 172 62381 546.33 584 567 113.1
B 0 245 34611 300.89 584 567 113.1
C 15 214 210284 1565.76 567 570 133.9
C 5 250 121172 900.44 567 570 133.9
C 2 16 110396 819.98 567 570 133.9
D 10 118 700932 5107.02 552 536 137.1
D 12 6 325409 2368.85 552 536 137.1
D 12 233 97978 710.51 552 536 137.1

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