ASTROSAT CZTI

Data Quality Report

Orbit 44922

Creation date: 2024-06-27T23:08:01.207187
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/AS1A13_017T02_9000006032_44922cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44922cztM0_level2_quad_clean.evt
Size (bytes)523,503,360112,991,040
Size499.3 MB 107.8 MB
Events in quadrant A5,466,665769,848
Events in quadrant B4,248,956782,209
Events in quadrant C3,265,722773,388
Events in quadrant D5,901,909650,405

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205053
B0166953
C0137963
D0218995

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63892063.224292%
B63893315.180779%
C6389831.299108%
D638866410.394490%

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 7564 6391 2 2 0.03% 0.03%
B 7564 6391 153 153 2.02% 2.39%
C 7564 6391 4 4 0.05% 0.06%
D 7563 6389 442 442 5.84% 6.92%

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 2321767 14357.13 786 772 161.7
A 0 247 69309 423.95 786 772 161.7
A 7 191 16698 98.51 786 772 161.7
B 4 171 618660 4134.11 774 753 149.5
B 0 183 242499 1617.4 774 753 149.5
B 5 172 83891 556.24 774 753 149.5
C 0 207 138669 755.02 781 787 182.6
C 14 254 27023 143.66 781 787 182.6
C 3 233 19389 101.86 781 787 182.6
D 1 52 1014196 5391.27 745 724 188.0
D 2 249 730944 3884.48 745 724 188.0
D 13 249 367407 1950.61 745 724 188.0

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