ASTROSAT CZTI

Data Quality Report

Orbit 47578

Creation date: 2024-07-15T23:21:28.810712
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_002T01_9000006334_47578cztM0_level2.fits modeM0/AS1C09_002T01_9000006334_47578cztM0_level2_quad_clean.evt
Size (bytes)722,753,28098,225,280
Size689.3 MB 93.7 MB
Events in quadrant A7,446,891707,076
Events in quadrant B3,120,797750,602
Events in quadrant C2,826,572719,744
Events in quadrant D12,868,286353,705

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266571
B0134541
C0130581
D0425981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63514887.683829%
B6351901.417100%
C6351360.566840%
D6352322650.787154%

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 7501 6351 126 126 1.68% 1.98%
B 7501 6351 3 3 0.04% 0.05%
C 7501 6351 6 6 0.08% 0.09%
D 7502 6352 3291 3291 43.87% 51.81%

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 3964855 26893.12 718 704 147.4
A 9 191 549305 3721.75 718 704 147.4
A 14 248 74471 500.44 718 704 147.4
B 0 200 111791 787.77 727 704 141.0
B 0 190 42851 298.88 727 704 141.0
B 0 183 28918 200.08 727 704 141.0
C 1 3 39306 232.94 711 712 165.7
C 14 254 8102 44.6 711 712 165.7
C 13 61 4904 25.3 711 712 165.7
D 2 165 9519594 73291.97 506 488 129.9
D 6 112 665644 5121.34 506 488 129.9
D 12 233 196816 1511.62 506 488 129.9

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