ASTROSAT CZTI

Data Quality Report

Orbit 13364

Creation date: 2024-06-27T16:39:42.345327
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/AS1G08_082T01_9000001986_13364cztM0_level2.evt modeM0/AS1G08_082T01_9000001986_13364cztM0_level2_quad_clean.evt
Size (bytes)650,666,880124,482,240
Size620.5 MB 118.7 MB
Events in quadrant A4,288,649802,301
Events in quadrant B4,301,778819,878
Events in quadrant C4,567,839786,956
Events in quadrant D5,951,879750,830

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187693
B0187842
C0194352
D0237402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8794730.830111%
B87941091.239481%
C87941111.262224%
D87942482.820105%

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 9310 8797 1 1 0.01% 0.01%
B 9310 8797 0 0 0.00% 0.00%
C 9310 8797 23 23 0.25% 0.26%
D 9310 8797 76 76 0.82% 0.86%

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 9 143 35094 152.17 1092 1067 223.6
A 8 15 24975 106.92 1092 1067 223.6
A 1 162 17415 73.11 1092 1067 223.6
B 0 230 28374 131.58 1083 1055 207.6
B 12 111 24608 113.44 1083 1055 207.6
B 11 111 20285 92.62 1083 1055 207.6
C 14 220 401281 1627.26 1053 1058 245.9
C 3 233 56336 224.75 1053 1058 245.9
C 13 61 7688 26.96 1053 1058 245.9
D 1 52 719888 2843.06 1044 1010 252.9
D 9 85 452462 1785.43 1044 1010 252.9
D 8 195 414640 1635.85 1044 1010 252.9

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