ASTROSAT CZTI

Data Quality Report

Orbit 51267

Creation date: 2025-03-21T13:07:25.865065
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_001T01_9000006454_51267cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51267cztM0_level2_quad_clean.evt
Size (bytes)693,993,60097,464,960
Size661.8 MB 92.9 MB
Events in quadrant A6,413,513649,615
Events in quadrant B3,752,886722,501
Events in quadrant C10,303,989487,587
Events in quadrant D4,657,927586,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242400
B0163520
C0356180
D0189820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72511572.165219%
B7251731.006758%
C7251215829.761412%
D72512813.875328%

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 7251 7251 131 131 1.81% 1.81%
B 7251 7251 37 37 0.51% 0.51%
C 7251 7251 2139 2139 29.50% 29.50%
D 7251 7251 288 288 3.97% 3.97%

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 12 3 2412148 13311.0 735 718 181.2
A 12 194 275468 1516.61 735 718 181.2
A 12 250 271160 1492.83 735 718 181.2
B 10 247 168047 1044.61 741 714 160.2
B 5 185 158690 986.2 741 714 160.2
B 8 128 142699 886.37 741 714 160.2
C 4 12 6257854 35187.52 647 641 177.8
C 13 3 376045 2111.09 647 641 177.8
C 3 233 326145 1830.47 647 641 177.8
D 8 176 337094 1703.5 705 678 197.5
D 12 218 275935 1393.81 705 678 197.5
D 7 96 270225 1364.9 705 678 197.5

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