ASTROSAT CZTI

Data Quality Report

Orbit 09457

Creation date: 2024-06-27T15:46:22.434145
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/AS1T01_177T01_9000001344_09457cztM0_level2.evt modeM0/AS1T01_177T01_9000001344_09457cztM0_level2_quad_clean.evt
Size (bytes)573,186,240106,300,800
Size546.6 MB 101.4 MB
Events in quadrant A4,237,783663,888
Events in quadrant B4,407,660659,403
Events in quadrant C3,935,037649,535
Events in quadrant D4,187,675641,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182343
B0189352
C0178832
D0186322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8707680.780981%
B8707991.137016%
C8707280.321580%
D8707520.597221%

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 9367 8709 1 1 0.01% 0.01%
B 9367 8709 17 17 0.18% 0.20%
C 9367 8709 3 3 0.03% 0.03%
D 9367 8709 27 27 0.29% 0.31%

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 1 162 91693 428.27 1030 1006 211.8
A 8 5 89478 417.81 1030 1006 211.8
A 1 178 34072 156.15 1030 1006 211.8
B 5 255 229752 1138.86 1030 1006 200.9
B 0 187 76415 375.44 1030 1006 200.9
B 0 214 39531 191.8 1030 1006 200.9
C 9 68 38724 161.19 993 997 234.0
C 14 234 24730 101.4 993 997 234.0
C 13 61 7611 28.26 993 997 234.0
D 1 52 123152 486.01 989 963 251.4
D 8 195 103588 408.2 989 963 251.4
D 7 71 65059 254.95 989 963 251.4

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