ASTROSAT CZTI

Data Quality Report

Orbit 15149

Creation date: 2024-06-27T17:04:43.984429
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/AS1G08_035T01_9000002234_15149cztM0_level2.evt modeM0/AS1G08_035T01_9000002234_15149cztM0_level2_quad_clean.evt
Size (bytes)510,854,40098,625,600
Size487.2 MB 94.1 MB
Events in quadrant A4,021,719634,223
Events in quadrant B3,734,306641,746
Events in quadrant C3,588,235635,332
Events in quadrant D3,670,360606,368

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164853
B0153892
C0151762
D0152982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6727660.981121%
B67271382.051435%
C6727440.654081%
D6727901.337892%

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 7673 6729 0 0 0.00% 0.00%
B 7673 6728 59 59 0.77% 0.88%
C 7673 6729 0 0 0.00% 0.00%
D 7673 6729 40 40 0.52% 0.59%

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 15 239 761864 4524.97 828 809 168.2
A 12 189 57772 338.68 828 809 168.2
A 11 29 8511 45.79 828 809 168.2
B 3 64 241068 1518.48 820 800 158.2
B 0 229 101376 635.64 820 800 158.2
B 4 48 39475 244.42 820 800 158.2
C 3 233 462988 2512.93 795 799 183.9
C 14 234 17162 88.97 795 799 183.9
C 13 61 5820 27.3 795 799 183.9
D 2 33 204683 1040.32 797 773 196.0
D 2 16 199896 1015.9 797 773 196.0
D 7 38 89022 450.23 797 773 196.0

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