ASTROSAT CZTI

Data Quality Report

Orbit 21171

Creation date: 2024-06-27T18:24:37.725438
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_009T03_9000003128_21171cztM0_level2.evt modeM0/AS1A06_009T03_9000003128_21171cztM0_level2_quad_clean.evt
Size (bytes)163,736,64032,673,600
Size156.2 MB 31.2 MB
Events in quadrant A834,607222,697
Events in quadrant B938,853225,561
Events in quadrant C816,732217,699
Events in quadrant D2,251,292198,691

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034510
B037290
C034280
D078880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A169230.177305%
B169350.295334%
C169340.236267%
D169319811.695216%

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 1692 1692 0 0 0.00% 0.00%
B 1693 1693 1 1 0.06% 0.06%
C 1693 1693 0 0 0.00% 0.00%
D 1693 1693 245 245 14.47% 14.47%

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 8 6 4317 90.61 214 209 45.3
A 13 254 2595 52.63 214 209 45.3
A 8 205 1977 39.0 214 209 45.3
B 0 189 47963 1144.2 208 204 41.7
B 0 190 37640 896.89 208 204 41.7
B 15 35 16228 383.9 208 204 41.7
C 14 238 31185 640.91 200 201 48.3
C 3 233 2212 41.6 200 201 48.3
C 13 61 1420 25.22 200 201 48.3
D 1 20 775381 15266.85 202 196 50.8
D 7 238 454759 8952.37 202 196 50.8
D 1 52 171142 3366.69 202 196 50.8

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