ASTROSAT CZTI

Data Quality Report

Orbit 16976

Creation date: 2024-06-27T17:30:35.635432
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_058T01_9000002522_16976cztM0_level2.evt modeM0/AS1T03_058T01_9000002522_16976cztM0_level2_quad_clean.evt
Size (bytes)147,576,96038,776,320
Size140.7 MB 37.0 MB
Events in quadrant A906,516265,229
Events in quadrant B1,010,815273,916
Events in quadrant C1,353,013256,905
Events in quadrant D1,078,467250,405

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037321
B041111
C053471
D043081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A173380.461627%
B1733261.500289%
C1733623.577611%
D1733392.250433%

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 2949 1735 0 0 0.00% 0.00%
B 2949 1735 6 6 0.20% 0.35%
C 2949 1735 0 0 0.00% 0.00%
D 2949 1735 23 23 0.78% 1.33%

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 0 226 2083 38.43 235 231 48.2
A 12 194 1731 31.13 235 231 48.2
A 3 137 1523 26.81 235 231 48.2
B 7 220 22641 491.35 239 233 45.6
B 4 216 13721 295.76 239 233 45.6
B 0 229 10189 218.31 239 233 45.6
C 3 233 402500 7382.42 232 234 54.5
C 14 238 37065 675.93 232 234 54.5
C 0 207 4986 87.21 232 234 54.5
D 1 52 194816 3430.39 229 222 56.7
D 2 152 10738 185.38 229 222 56.7
D 2 234 6881 117.39 229 222 56.7

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