ASTROSAT CZTI

Data Quality Report

Orbit 08827

Creation date: 2024-06-27T15:37:41.871202
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/AS1A03_135T01_9000001226_08827cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08827cztM0_level2_quad_clean.evt
Size (bytes)543,389,76088,113,600
Size518.2 MB 84.0 MB
Events in quadrant A4,067,379564,191
Events in quadrant B3,542,728570,086
Events in quadrant C3,141,277556,403
Events in quadrant D5,270,079529,983

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01644322
B01447612
C01347922
D01981617

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64092023.151818%
B64121552.417342%
C6408630.983146%
D641073111.404056%

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 7617 6417 58 58 0.76% 0.90%
B 7617 6417 54 54 0.71% 0.84%
C 7617 6417 0 0 0.00% 0.00%
D 7617 6417 651 651 8.55% 10.14%

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 8 5 375496 2234.33 832 818 167.7
A 15 223 244652 1454.06 832 818 167.7
A 15 239 103295 611.1 832 818 167.7
B 10 16 248657 1577.53 830 812 157.1
B 0 214 54544 342.0 830 812 157.1
B 12 111 16516 99.96 830 812 157.1
C 13 61 5973 28.04 804 810 184.1
C 5 32 3175 12.84 804 810 184.1
C 12 4 2984 11.81 804 810 184.1
D 2 16 1314678 7006.78 776 756 187.5
D 1 52 402872 2144.37 776 756 187.5
D 13 105 259647 1380.59 776 756 187.5

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