ASTROSAT CZTI

Data Quality Report

Orbit 24685

Creation date: 2024-06-27T19:08:45.423013
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/AS1T03_191T01_9000003618_24685cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24685cztM0_level2_quad_clean.evt
Size (bytes)709,015,680140,952,960
Size676.2 MB 134.4 MB
Events in quadrant A3,528,324975,411
Events in quadrant B3,668,015981,449
Events in quadrant C3,610,091928,645
Events in quadrant D10,150,107852,312

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157012
B0159992
C0157152
D0353732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7635841.100196%
B7635941.231172%
C76351121.466929%
D7635135417.734119%

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 7955 7635 1 1 0.01% 0.01%
B 7955 7635 0 0 0.00% 0.00%
C 7955 7635 1 1 0.01% 0.01%
D 7955 7635 1289 1289 16.20% 16.88%

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 11559 57.79 910 887 184.7
A 4 2 11305 56.41 910 887 184.7
A 3 137 8365 40.49 910 887 184.7
B 3 64 50819 286.94 904 878 174.0
B 0 189 34267 191.84 904 878 174.0
B 0 190 28802 160.44 904 878 174.0
C 14 238 137782 683.72 862 866 200.3
C 2 16 30368 147.32 862 866 200.3
C 10 91 24630 118.67 862 866 200.3
D 1 52 6678023 32560.23 839 811 205.1
D 8 195 128625 623.26 839 811 205.1
D 7 238 123325 597.42 839 811 205.1

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