ASTROSAT CZTI

Data Quality Report

Orbit 30988

Creation date: 2024-06-27T20:21:57.517531
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/AS1A10_071T42_9000004476_30988cztM0_level2.evt modeM0/AS1A10_071T42_9000004476_30988cztM0_level2_quad_clean.evt
Size (bytes)179,945,28036,996,480
Size171.6 MB 35.3 MB
Events in quadrant A901,643261,973
Events in quadrant B2,171,168228,168
Events in quadrant C1,006,503248,132
Events in quadrant D1,241,018244,966

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038620
B077480
C041510
D049160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186910.053505%
B187036119.304813%
C1870191.016043%
D1870361.925134%

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 1869 1869 0 0 0.00% 0.00%
B 1870 1870 325 325 17.38% 17.38%
C 1870 1870 3 3 0.16% 0.16%
D 1870 1870 41 41 2.19% 2.19%

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 4036 78.57 233 228 48.5
A 3 137 2193 40.54 233 228 48.5
A 0 226 1974 36.02 233 228 48.5
B 5 172 789987 19442.26 205 200 40.6
B 6 159 499392 12288.66 205 200 40.6
B 0 155 27682 676.53 205 200 40.6
C 0 10 87344 1617.99 223 224 53.8
C 14 238 36538 674.42 223 224 53.8
C 4 175 5835 104.21 223 224 53.8
D 13 249 207522 3727.03 227 220 55.6
D 8 195 147591 2649.55 227 220 55.6
D 2 234 10409 183.19 227 220 55.6

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