ASTROSAT CZTI

Data Quality Report

Orbit 15503

Creation date: 2024-06-27T17:09:33.502277
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/AS1T02_085T01_9000002296_15503cztM0_level2.evt modeM0/AS1T02_085T01_9000002296_15503cztM0_level2_quad_clean.evt
Size (bytes)469,402,56074,960,640
Size447.7 MB 71.5 MB
Events in quadrant A3,128,502473,411
Events in quadrant B3,276,918478,689
Events in quadrant C3,251,038454,038
Events in quadrant D4,150,106442,646

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128632
B0132511
C0129501
D0161621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60241011.676627%
B6024991.643426%
C60241272.108234%
D60242974.930279%

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 7275 6025 4 4 0.05% 0.07%
B 7275 6026 7 7 0.10% 0.12%
C 7275 6026 0 0 0.00% 0.00%
D 7275 6026 152 152 2.09% 2.52%

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 14 238 70911 448.4 783 765 156.4
A 9 143 19864 122.09 783 765 156.4
A 15 69 9511 55.91 783 765 156.4
B 4 142 63627 439.19 774 755 143.2
B 0 189 32556 222.14 774 755 143.2
B 4 80 26450 179.49 774 755 143.2
C 3 233 247313 1448.76 740 746 170.2
C 14 238 117013 683.15 740 746 170.2
C 13 61 5205 26.2 740 746 170.2
D 1 52 756758 4173.99 749 727 181.1
D 5 222 296130 1630.89 749 727 181.1
D 10 70 154356 848.17 749 727 181.1

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