ASTROSAT CZTI

Data Quality Report

Orbit 31412

Creation date: 2024-06-27T20:25:27.950878
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/AS1C06_002T02_9000004518_31412cztM0_level2.evt modeM0/AS1C06_002T02_9000004518_31412cztM0_level2_quad_clean.evt
Size (bytes)169,842,24038,419,200
Size162.0 MB 36.6 MB
Events in quadrant A1,054,314265,411
Events in quadrant B1,520,670246,753
Events in quadrant C1,181,080254,924
Events in quadrant D1,247,906248,902

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05816
B05715
C05715
D05814

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060591761
B087122794
C068922199
D071162158

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2061271.310044%
B1954542.763562%
C2029924.534253%
D2018351.734390%

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 4314 2248 0 0 0.00% 0.00%
B 4303 2099 0 0 0.00% 0.00%
C 4332 2184 8 8 0.18% 0.37%
D 4309 2189 6 6 0.14% 0.27%

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 3050 49.7 273 267 56.0
A 3 137 2648 42.52 273 267 56.0
A 0 226 2390 37.91 273 267 56.0
B 6 159 528401 10852.29 250 244 48.7
B 12 111 5634 110.75 250 244 48.7
B 11 111 5301 103.91 250 244 48.7
C 10 22 55355 898.75 258 260 61.3
C 3 233 50962 827.09 258 260 61.3
C 14 238 44288 718.21 258 260 61.3
D 8 195 193002 3078.59 260 252 62.6
D 12 218 49058 779.53 260 252 62.6
D 12 233 10945 170.79 260 252 62.6

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