ASTROSAT CZTI

Data Quality Report

Orbit 06170

Creation date: 2024-06-27T15:03:44.274286
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/AS1G06_139T05_9000000804_06170cztM0_level2.evt modeM0/AS1G06_139T05_9000000804_06170cztM0_level2_quad_clean.evt
Size (bytes)523,586,880106,205,760
Size499.3 MB 101.3 MB
Events in quadrant A4,058,703670,690
Events in quadrant B3,845,333685,662
Events in quadrant C3,495,305670,042
Events in quadrant D3,923,893644,259

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01682
B016814
C01684
D01684

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017998735
B017563754
C016817683
D018243861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78521381.757514%
B78271181.507602%
C7840600.765306%
D78381341.709620%

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 8818 8158 16 16 0.18% 0.20%
B 8818 8156 5 5 0.06% 0.06%
C 8818 8150 0 0 0.00% 0.00%
D 8818 8146 61 61 0.69% 0.75%

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 8 15 499090 2655.82 912 893 187.6
A 4 2 33761 175.22 912 893 187.6
A 12 194 8603 41.1 912 893 187.6
B 0 219 114386 632.07 925 900 179.5
B 0 214 48481 265.0 925 900 179.5
B 15 204 34746 188.51 925 900 179.5
C 12 16 19473 89.92 888 889 206.7
C 1 16 10944 48.65 888 889 206.7
C 13 61 7005 29.59 888 889 206.7
D 2 206 246459 1132.47 881 853 216.9
D 2 14 118823 543.95 881 853 216.9
D 12 110 85967 392.45 881 853 216.9

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