ASTROSAT CZTI

Data Quality Report

Orbit 16456

Creation date: 2024-06-27T17:22:56.416606
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/AS1C04_007T04_9000002430_16456cztM0_level2.evt modeM0/AS1C04_007T04_9000002430_16456cztM0_level2_quad_clean.evt
Size (bytes)463,662,72085,685,760
Size442.2 MB 81.7 MB
Events in quadrant A3,128,549542,978
Events in quadrant B3,871,138557,188
Events in quadrant C3,190,317542,124
Events in quadrant D3,427,448515,972

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131543
B0155442
C0131152
D0143742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6251440.703887%
B62511231.967685%
C6251610.975844%
D6251821.311790%

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 7517 6252 13 13 0.17% 0.21%
B 7517 6252 58 58 0.77% 0.93%
C 7517 6253 1 1 0.01% 0.02%
D 7517 6253 44 44 0.59% 0.70%

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 15 174 76490 475.49 792 778 159.2
A 0 226 7088 39.63 792 778 159.2
A 12 194 5878 32.03 792 778 159.2
B 15 35 233156 1553.64 803 785 149.6
B 0 244 207074 1379.26 803 785 149.6
B 4 173 96715 641.39 803 785 149.6
C 14 238 121452 679.19 767 772 177.7
C 3 233 62358 346.61 767 772 177.7
C 0 207 9099 46.86 767 772 177.7
D 1 52 372615 2006.02 763 742 185.4
D 2 33 60157 320.5 763 742 185.4
D 12 218 36395 192.32 763 742 185.4

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