ASTROSAT CZTI

Data Quality Report

Orbit 15196

Creation date: 2024-06-27T17:05:08.730033
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/AS1T02_069T01_9000002242_15196cztM0_level2.evt modeM0/AS1T02_069T01_9000002242_15196cztM0_level2_quad_clean.evt
Size (bytes)127,123,20027,544,320
Size121.2 MB 26.3 MB
Events in quadrant A647,340194,089
Events in quadrant B1,534,555165,789
Events in quadrant C845,908196,806
Events in quadrant D738,084186,465

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026382
B054451
C034251
D029591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119620.167224%
B119637731.521739%
C1196151.254181%
D1196151.254181%

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 1197 1197 0 0 0.00% 0.00%
B 1197 1197 267 267 22.31% 22.31%
C 1197 1197 0 0 0.00% 0.00%
D 1197 1197 11 11 0.92% 0.92%

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 12 189 4415 121.24 166 163 35.1
A 0 226 1536 39.15 166 163 35.1
A 12 194 1277 31.76 166 163 35.1
B 3 112 827293 29616.6 143 140 27.9
B 3 64 41729 1489.11 143 140 27.9
B 0 189 26119 930.19 143 140 27.9
C 3 233 183352 4576.33 168 169 40.0
C 0 207 5004 120.79 168 169 40.0
C 7 247 2005 45.87 168 169 40.0
D 7 38 42752 1037.64 166 161 41.0
D 9 68 25943 628.13 166 161 41.0
D 7 55 13422 323.08 166 161 41.0

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