ASTROSAT CZTI

Data Quality Report

Orbit 02295

Creation date: 2024-06-27T14:15:47.876279
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/AS1T01_058T01_9000000348_02295cztM0_level2.evt modeM0/AS1T01_058T01_9000000348_02295cztM0_level2_quad_clean.evt
Size (bytes)8,801,2802,615,040
Size8.4 MB 2.5 MB
Events in quadrant A78,69117,034
Events in quadrant B83,66821,552
Events in quadrant C7,686680
Events in quadrant D80,05818,264

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02733597094080
B0-1-1
C0-1-1
D0-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064746117
B065476193
C071267094
D064826108

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18100.000000%
B17910.558659%
C1700.000000%
D19110.523560%

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 6876 330 0 0 0.00% 0.00%
B 6876 324 0 0 0.00% 0.00%
C 4415 25 0 0 0.00% 0.00%
D 6875 346 0 0 0.00% 0.00%

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 12 194 242 36.84 20 19 6.1
A 0 226 228 34.53 20 19 6.1
A 14 188 56 6.11 20 19 6.1
B 4 48 1323 211.24 21 20 6.2
B 8 3 1000 158.88 21 20 6.2
B 12 111 305 46.2 21 20 6.2
C 5 234 850 798.52 1 1 1.1
C 10 82 160 149.55 1 1 1.1
C 13 61 20 17.87 1 1 1.1
D 15 194 397 55.03 20 20 6.9
D 14 226 249 33.43 20 20 6.9
D 13 169 118 14.31 20 20 6.9

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