ASTROSAT CZTI

Data Quality Report

Orbit 01035

Creation date: 2024-06-27T14:06:29.889295
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/AS1P01_998T02_9000000190_01035cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01035cztM0_level2_quad_clean.evt
Size (bytes)1,230,759,360131,002,560
Size1.1 GB 124.9 MB
Events in quadrant A9,150,064861,868
Events in quadrant B9,697,537871,379
Events in quadrant C9,491,685849,597
Events in quadrant D8,413,880839,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327462
B0343862
C0337942
D0306542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A785170.089161%
B7852190.241977%
C7852100.127356%
D7852250.318390%

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 8931 7853 198 198 2.22% 2.52%
B 8932 7854 273 273 3.06% 3.48%
C 8932 7854 276 276 3.09% 3.51%
D 8932 7854 161 161 1.80% 2.05%

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 14 16011 23.73 2378 2390 574.1
A 11 79 8155 10.04 2378 2390 574.1
A 3 111 7554 9.0 2378 2390 574.1
B 7 221 39782 63.18 2505 2514 589.9
B 0 220 26477 40.62 2505 2514 589.9
B 5 191 25260 38.56 2505 2514 589.9
C 15 241 374910 582.58 2286 2367 639.5
C 8 208 110844 169.63 2286 2367 639.5
C 3 111 34464 50.19 2286 2367 639.5
D 1 83 146210 210.59 2192 2267 683.5
D 10 125 21582 28.26 2192 2267 683.5
D 13 73 18843 24.25 2192 2267 683.5

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