ASTROSAT CZTI

Data Quality Report

Orbit 20914

Creation date: 2024-06-27T18:21:04.174476
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/AS1A06_002T03_9000003080_20914cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20914cztM0_level2_quad_clean.evt
Size (bytes)773,660,160138,340,800
Size737.8 MB 131.9 MB
Events in quadrant A5,457,534871,696
Events in quadrant B5,550,433876,364
Events in quadrant C5,427,577851,904
Events in quadrant D6,243,878822,508

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236874
B02377919
C02347412
D0259928

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02262
C02260
D02260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11088810.730519%
B110841050.947311%
C110851701.533604%
D110872932.642735%

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 12349 11091 23 23 0.19% 0.21%
B 12349 11091 18 18 0.15% 0.16%
C 12350 11092 41 41 0.33% 0.37%
D 12350 11092 282 282 2.28% 2.54%

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 6 16 298696 1116.9 1316 1289 266.3
A 15 174 58082 213.28 1316 1289 266.3
A 5 16 43637 159.04 1316 1289 266.3
B 7 220 186074 733.69 1315 1281 251.9
B 0 228 61422 238.78 1315 1281 251.9
B 0 190 40137 154.27 1315 1281 251.9
C 9 54 271897 921.78 1260 1267 293.6
C 14 238 198917 673.2 1260 1267 293.6
C 0 207 18813 59.76 1260 1267 293.6
D 1 52 1245293 4026.44 1270 1232 309.0
D 7 38 154278 495.34 1270 1232 309.0
D 2 234 57652 182.61 1270 1232 309.0

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