ASTROSAT CZTI

Data Quality Report

Orbit 19543

Creation date: 2024-06-27T18:04:11.191274
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/AS1A05_142T01_9000002904_19543cztM0_level2.evt modeM0/AS1A05_142T01_9000002904_19543cztM0_level2_quad_clean.evt
Size (bytes)487,523,52071,167,680
Size464.9 MB 67.9 MB
Events in quadrant A3,418,234425,937
Events in quadrant B3,535,707429,724
Events in quadrant C3,712,376411,414
Events in quadrant D3,632,625410,064

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142733
B0145483
C0150164
D0151483

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68531171.707281%
B68531311.911572%
C68521502.189142%
D68521131.649154%

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 7688 6854 2 2 0.03% 0.03%
B 7688 6854 14 14 0.18% 0.20%
C 7687 6853 3 3 0.04% 0.04%
D 7687 6853 23 23 0.30% 0.34%

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 5 16 19475 104.95 880 860 177.4
A 13 254 9330 47.75 880 860 177.4
A 0 226 7730 38.73 880 860 177.4
B 0 198 44836 263.34 867 844 167.1
B 0 230 42027 246.52 867 844 167.1
B 3 64 40496 237.36 867 844 167.1
C 3 233 230433 1181.28 832 836 194.4
C 14 238 129740 663.22 832 836 194.4
C 7 247 104548 533.6 832 836 194.4
D 1 52 216634 1039.01 853 828 207.7
D 12 218 127993 612.25 853 828 207.7
D 12 225 45164 213.46 853 828 207.7

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