ASTROSAT CZTI

Data Quality Report

Orbit 46258

Creation date: 2024-06-27T23:20:56.146155
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/AS1A13_071T10_9000006192_46258cztM0_level2.fits modeM0/AS1A13_071T10_9000006192_46258cztM0_level2_quad_clean.evt
Size (bytes)437,688,000105,857,280
Size417.4 MB 101.0 MB
Events in quadrant A5,702,834697,597
Events in quadrant B3,386,337729,754
Events in quadrant C3,213,309702,405
Events in quadrant D3,411,948638,142

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212821
B0143181
C0139571
D0145551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62722614.161352%
B62721672.662628%
C62731862.965088%
D62732233.554918%

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 7342 6274 10 10 0.14% 0.16%
B 7342 6273 17 17 0.23% 0.27%
C 7343 6275 84 84 1.14% 1.34%
D 7343 6274 76 76 1.03% 1.21%

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 10 83 2933024 19905.14 710 693 147.3
A 13 254 10463 66.32 710 693 147.3
A 7 3 10157 64.24 710 693 147.3
B 3 112 390348 2784.09 715 693 140.0
B 5 32 46077 324.27 715 693 140.0
B 0 246 42775 300.68 715 693 140.0
C 12 2 239425 1444.37 710 712 165.3
C 1 3 176967 1066.46 710 712 165.3
C 14 254 12638 72.16 710 712 165.3
D 13 249 247751 1433.37 705 684 172.4
D 8 129 115382 665.42 705 684 172.4
D 1 52 101219 583.26 705 684 172.4

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