ASTROSAT CZTI

Data Quality Report

Orbit 33400

Creation date: 2024-06-27T20:48:25.143359
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/AS1C07_001T03_9000004790_33400cztM0_level2.evt modeM0/AS1C07_001T03_9000004790_33400cztM0_level2_quad_clean.evt
Size (bytes)550,546,56086,679,360
Size525.0 MB 82.7 MB
Events in quadrant A2,652,733591,707
Events in quadrant B4,562,757544,516
Events in quadrant C3,169,679566,231
Events in quadrant D5,890,293511,614

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117913
B0173002
C0128252
D0216142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5870110.187394%
B587070712.044293%
C5870550.936968%
D58705088.654174%

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 7183 5871 0 0 0.00% 0.00%
B 7183 5871 568 568 7.91% 9.67%
C 7183 5871 40 40 0.56% 0.68%
D 7183 5871 487 487 6.78% 8.30%

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 6 10469 70.88 683 670 138.3
A 13 254 9990 67.41 683 670 138.3
A 3 137 6686 43.51 683 670 138.3
B 5 172 1836044 14892.12 641 625 123.2
B 4 170 44471 355.76 641 625 123.2
B 0 245 42948 343.4 641 625 123.2
C 15 214 252501 1645.08 659 663 153.1
C 0 10 192710 1254.5 659 663 153.1
C 1 23 100427 651.68 659 663 153.1
D 8 195 1248018 7869.12 641 623 158.5
D 14 173 677762 4271.69 641 623 158.5
D 12 218 596152 3756.86 641 623 158.5

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