ASTROSAT CZTI

Data Quality Report

Orbit 16302

Creation date: 2024-06-27T17:20:44.123219
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/AS1A05_034T01_9000002404_16302cztM0_level2.evt modeM0/AS1A05_034T01_9000002404_16302cztM0_level2_quad_clean.evt
Size (bytes)849,087,360175,294,080
Size809.8 MB 167.2 MB
Events in quadrant A6,485,5671,104,549
Events in quadrant B6,369,3741,130,348
Events in quadrant C6,042,3431,114,097
Events in quadrant D5,977,7371,103,698

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272343
B0266452
C0258062
D0262072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124003622.919355%
B124003592.895161%
C124003462.790323%
D124002582.080645%

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 13136 12405 32 32 0.24% 0.26%
B 13136 12405 9 9 0.07% 0.07%
C 13136 12405 0 0 0.00% 0.00%
D 13136 12405 36 36 0.27% 0.29%

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 600831 1937.38 1529 1495 309.4
A 0 226 13142 37.65 1529 1495 309.4
A 12 194 11399 32.02 1529 1495 309.4
B 0 189 81854 276.8 1529 1490 290.3
B 0 198 79916 270.12 1529 1490 290.3
B 15 35 71639 241.61 1529 1490 290.3
C 14 238 227007 660.77 1474 1485 341.3
C 3 233 27389 75.9 1474 1485 341.3
C 7 247 18016 48.43 1474 1485 341.3
D 10 70 157070 399.78 1491 1459 389.2
D 2 234 51227 127.86 1491 1459 389.2
D 1 52 50156 125.11 1491 1459 389.2

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