ASTROSAT CZTI

Data Quality Report

Orbit 29814

Creation date: 2024-06-27T20:07:58.400362
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/AS1T03_291T01_9000004278_29814cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29814cztM0_level2_quad_clean.evt
Size (bytes)2,454,773,760256,688,640
Size2.3 GB 244.8 MB
Events in quadrant A9,540,8991,828,987
Events in quadrant B20,084,0611,779,094
Events in quadrant C10,150,1691,736,420
Events in quadrant D33,219,3031,042,369

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04080
B04080
C04080
D04080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413584
B0738494
C0427074
D01121374

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A200821730.861468%
B20083243512.124683%
C200836073.022457%
D20083904045.013195%

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 21117 20086 0 0 0.00% 0.00%
B 21118 20087 1218 1218 5.77% 6.06%
C 21118 20087 69 69 0.33% 0.34%
D 21118 20087 8726 8726 41.32% 43.44%

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 13 254 38950 73.44 2471 2415 497.4
A 3 137 25168 45.74 2471 2415 497.4
A 0 226 20471 36.3 2471 2415 497.4
B 6 159 5632919 12403.78 2384 2321 453.9
B 0 189 4631035 10196.71 2384 2321 453.9
B 0 229 170960 371.5 2384 2321 453.9
C 14 238 386356 693.9 2371 2380 553.4
C 10 22 350835 629.71 2371 2380 553.4
C 2 16 97599 172.07 2371 2380 553.4
D 7 238 24497460 56794.95 1809 1759 431.3
D 8 195 1181219 2734.66 1809 1759 431.3
D 7 80 324143 747.47 1809 1759 431.3

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