ASTROSAT CZTI

Data Quality Report

Orbit 11370

Creation date: 2024-06-27T16:11:57.248925
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/AS1G08_062T01_9000001660_11370cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11370cztM0_level2_quad_clean.evt
Size (bytes)967,377,600159,649,920
Size922.6 MB 152.3 MB
Events in quadrant A6,631,0381,010,879
Events in quadrant B8,083,700989,014
Events in quadrant C5,501,1261,013,329
Events in quadrant D8,237,191958,986

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280123
B0320682
C0252262
D0327412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124891150.920810%
B124895684.548002%
C12489610.488430%
D124897826.261510%

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 13794 12491 2 2 0.01% 0.02%
B 13794 12491 329 329 2.39% 2.63%
C 13794 12491 0 0 0.00% 0.00%
D 13794 12491 469 469 3.40% 3.75%

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 15 174 936091 3146.9 1448 1415 297.0
A 1 162 37875 122.75 1448 1415 297.0
A 1 178 21693 68.27 1448 1415 297.0
B 4 239 1450116 5303.91 1425 1387 273.1
B 3 64 573495 2094.53 1425 1387 273.1
B 11 51 283789 1033.89 1425 1387 273.1
C 13 61 10123 26.64 1410 1417 326.9
C 12 4 3747 7.13 1410 1417 326.9
C 3 202 3443 6.2 1410 1417 326.9
D 2 14 826000 2583.26 1347 1315 319.2
D 10 253 779118 2436.41 1347 1315 319.2
D 2 120 332511 1037.45 1347 1315 319.2

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