ASTROSAT CZTI

Data Quality Report

Orbit 21827

Creation date: 2024-06-27T18:32:43.857068
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/AS1A07_004T01_9000003230_21827cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21827cztM0_level2_quad_clean.evt
Size (bytes)475,061,76095,400,000
Size453.1 MB 91.0 MB
Events in quadrant A3,171,583630,341
Events in quadrant B3,473,239651,280
Events in quadrant C3,182,961617,864
Events in quadrant D4,137,654555,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132512
B0140612
C0131942
D0163402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6214460.740264%
B62141071.721918%
C6214861.383972%
D62143555.712906%

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 7524 6215 0 0 0.00% 0.00%
B 7524 6215 29 29 0.39% 0.47%
C 7524 6215 0 0 0.00% 0.00%
D 7524 6215 277 277 3.68% 4.46%

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 13 254 12039 67.75 818 805 165.8
A 0 226 7499 40.37 818 805 165.8
A 3 137 6390 33.68 818 805 165.8
B 3 64 101065 651.63 824 807 153.9
B 5 172 52052 333.07 824 807 153.9
B 0 190 23335 146.42 824 807 153.9
C 14 238 123480 673.87 781 789 182.1
C 5 112 7046 34.37 781 789 182.1
C 0 10 6920 33.67 781 789 182.1
D 13 104 529212 2874.84 757 735 183.8
D 1 52 367680 1996.13 757 735 183.8
D 7 38 235895 1279.24 757 735 183.8

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