ASTROSAT CZTI

Data Quality Report

Orbit 29238

Creation date: 2024-06-27T20:01:50.265247
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/AS1T03_272T01_9000004204_29238cztM0_level2.evt modeM0/AS1T03_272T01_9000004204_29238cztM0_level2_quad_clean.evt
Size (bytes)1,428,289,920133,565,760
Size1.3 GB 127.4 MB
Events in quadrant A5,299,839923,935
Events in quadrant B6,961,100919,465
Events in quadrant C10,478,166852,536
Events in quadrant D19,825,965634,176

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222412
B0274132
C0385152
D0659282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A102881411.370529%
B102894354.227816%
C1028910199.903781%
D10288564254.840591%

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 12633 10290 0 0 0.00% 0.00%
B 12634 10291 156 156 1.23% 1.52%
C 12634 10291 430 430 3.40% 4.18%
D 12633 10290 5144 5144 40.72% 49.99%

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 18962 65.33 1374 1349 269.6
A 0 226 12052 39.7 1374 1349 269.6
A 3 137 11949 39.32 1374 1349 269.6
B 10 245 1036543 4179.95 1336 1305 247.7
B 0 229 401032 1613.97 1336 1305 247.7
B 0 183 221657 889.71 1336 1305 247.7
C 3 233 5270273 17923.83 1278 1285 294.0
C 14 238 205806 695.73 1278 1285 294.0
C 2 114 24342 78.43 1278 1285 294.0
D 7 223 10654676 42734.72 1071 1047 249.3
D 1 52 4173044 16735.06 1071 1047 249.3
D 8 195 427106 1709.04 1071 1047 249.3

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