ASTROSAT CZTI

Data Quality Report

Orbit 26941

Creation date: 2024-06-27T19:34:45.470086
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/AS1A09_134T01_9000003896_26941cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26941cztM0_level2_quad_clean.evt
Size (bytes)878,688,00084,600,000
Size838.0 MB 80.7 MB
Events in quadrant A13,245,813319,192
Events in quadrant B4,176,160597,812
Events in quadrant C3,608,605588,145
Events in quadrant D5,096,084556,437

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0441930
B0167740
C0149580
D0198100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7158509571.179100%
B71582874.009500%
C71582153.003632%
D71583284.582286%

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 7713 7158 4223 4223 54.75% 59.00%
B 7713 7158 75 75 0.97% 1.05%
C 7713 7158 4 4 0.05% 0.06%
D 7713 7158 198 198 2.57% 2.77%

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 14 235 11195165 109495.28 508 498 102.2
A 8 192 36791 354.98 508 498 102.2
A 5 168 17964 170.84 508 498 102.2
B 0 189 503737 2946.26 895 872 170.7
B 15 33 48402 278.48 895 872 170.7
B 3 64 40265 230.8 895 872 170.7
C 14 238 139888 683.98 873 878 203.2
C 15 208 48103 232.36 873 878 203.2
C 3 233 14672 67.87 873 878 203.2
D 1 52 1227434 5950.79 869 846 206.1
D 2 250 208668 1008.25 869 846 206.1
D 7 80 188518 910.49 869 846 206.1

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