ASTROSAT CZTI

Data Quality Report

Orbit 47766

Creation date: 2024-07-28T15:32:19.160560
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/AS1C09_004T02_9000006348_47766cztM0_level2.fits modeM0/AS1C09_004T02_9000006348_47766cztM0_level2_quad_clean.evt
Size (bytes)452,338,560100,002,240
Size431.4 MB 95.4 MB
Events in quadrant A6,227,440667,845
Events in quadrant B3,274,035687,626
Events in quadrant C3,265,814651,081
Events in quadrant D3,503,851596,164

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234354
B0138661
C0140761
D0147111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60902814.614122%
B60901963.218391%
C60901953.201970%
D60902644.334975%

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 7165 6092 4 4 0.06% 0.07%
B 7165 6092 39 39 0.54% 0.64%
C 7165 6092 90 90 1.26% 1.48%
D 7165 6092 117 117 1.63% 1.92%

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 3518489 25069.21 682 669 140.3
A 14 248 35496 248.19 682 669 140.3
A 9 191 24717 171.37 682 669 140.3
B 5 255 237817 1818.14 676 655 130.4
B 0 186 187896 1435.43 676 655 130.4
B 0 200 75628 574.76 676 655 130.4
C 12 2 494859 3174.89 666 666 155.7
C 14 254 160434 1026.41 666 666 155.7
C 3 110 6952 40.38 666 666 155.7
D 2 249 579133 3472.7 669 647 166.6
D 7 67 120732 720.88 669 647 166.6
D 2 165 74849 445.44 669 647 166.6

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