ASTROSAT CZTI

Data Quality Report

Orbit 31308

Creation date: 2024-06-27T20:26:28.053028
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_058T08_9000004532_31308cztM0_level2.evt modeM0/AS1A10_058T08_9000004532_31308cztM0_level2_quad_clean.evt
Size (bytes)908,832,960149,673,600
Size866.7 MB 142.7 MB
Events in quadrant A5,627,990982,989
Events in quadrant B8,735,894971,206
Events in quadrant C5,979,117916,724
Events in quadrant D6,445,181907,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231062
B0335952
C0243712
D0260872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10896930.853524%
B108961991.826358%
C108961801.651982%
D108961811.661160%

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 13352 10898 0 0 0.00% 0.00%
B 13352 10898 14 14 0.10% 0.13%
C 13352 10898 12 12 0.09% 0.11%
D 13352 10898 93 93 0.70% 0.85%

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 18159 58.35 1459 1436 286.6
A 3 137 14037 43.97 1459 1436 286.6
A 0 226 12406 38.28 1459 1436 286.6
B 6 159 2840477 10562.69 1421 1389 268.8
B 4 80 167121 616.6 1421 1389 268.8
B 15 33 92045 337.28 1421 1389 268.8
C 3 233 333046 1049.25 1360 1371 316.1
C 14 238 224033 704.39 1360 1371 316.1
C 0 10 86269 268.57 1360 1371 316.1
D 8 195 900129 2530.09 1373 1348 355.2
D 1 52 300902 843.25 1373 1348 355.2
D 2 234 37050 100.5 1373 1348 355.2

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