ASTROSAT CZTI

Data Quality Report

Orbit 35278

Creation date: 2022-04-07T18:13:21.560494
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/AS1A11_082T01_9000005056_35278cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35278cztM0_level2_quad_clean.evt
Size (bytes)587,854,08053,565,120
Size560.6 MB 51.1 MB
Events in quadrant A2,604,511336,688
Events in quadrant B6,903,248297,682
Events in quadrant C4,077,690314,424
Events in quadrant D3,865,543308,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107663
B0240892
C0158222
D0146692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519760.115451%
B5197159830.748509%
C51971983.809890%
D51973566.850106%

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 7320 5198 0 0 0.00% 0.00%
B 7319 5197 1210 1210 16.53% 23.28%
C 7320 5198 163 163 2.23% 3.14%
D 7320 5198 318 318 4.34% 6.12%

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 98160 754.18 643 631 129.3
A 13 6 17184 128.0 643 631 129.3
A 13 254 9357 67.48 643 631 129.3
B 5 236 3269473 31096.66 557 542 105.1
B 5 172 1375679 13081.39 557 542 105.1
B 4 232 28942 270.16 557 542 105.1
C 4 254 763127 5483.98 609 615 139.0
C 0 10 651892 4683.98 609 615 139.0
C 15 214 215114 1542.67 609 615 139.0
D 14 52 411894 2719.94 608 595 151.2
D 10 118 309764 2044.55 608 595 151.2
D 8 195 234930 1549.67 608 595 151.2

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