ASTROSAT CZTI

Data Quality Report

Orbit 07788

Creation date: 2024-06-27T15:24:00.649780
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_169T01_9000001070_07788cztM0_level2.evt modeM0/AS1G06_169T01_9000001070_07788cztM0_level2_quad_clean.evt
Size (bytes)292,766,40047,534,400
Size279.2 MB 45.3 MB
Events in quadrant A2,031,149287,937
Events in quadrant B2,140,254293,471
Events in quadrant C2,028,091281,323
Events in quadrant D2,368,356268,444

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088671
B090721
C089051
D098741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4373120.274411%
B4373160.365882%
C437340.091470%
D4373130.297279%

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 4373 4373 0 0 0.00% 0.00%
B 4373 4373 1 1 0.02% 0.02%
C 4373 4373 0 0 0.00% 0.00%
D 4373 4373 6 6 0.14% 0.14%

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 0 226 4996 41.35 527 516 108.3
A 12 194 4604 37.73 527 516 108.3
A 13 14 3450 27.08 527 516 108.3
B 0 214 39639 386.59 530 518 101.2
B 0 213 18566 178.35 530 518 101.2
B 12 0 12293 116.36 530 518 101.2
C 1 16 53956 451.82 506 509 118.3
C 13 61 3828 28.06 506 509 118.3
C 3 202 1260 6.35 506 509 118.3
D 1 52 344439 2768.49 505 489 124.2
D 2 152 59188 472.47 505 489 124.2
D 13 137 17659 138.2 505 489 124.2

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