ASTROSAT CZTI

Data Quality Report

Orbit 09901

Creation date: 2024-06-27T15:52:06.465395
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/AS1G07_046T01_9000001408_09901cztM0_level2.evt modeM0/AS1G07_046T01_9000001408_09901cztM0_level2_quad_clean.evt
Size (bytes)400,965,12081,714,240
Size382.4 MB 77.9 MB
Events in quadrant A3,132,498515,118
Events in quadrant B2,880,690537,365
Events in quadrant C2,774,742518,074
Events in quadrant D2,949,531487,162

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013304169
B012517152
C012432160
D012943164

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01242
C01240
D01244

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5963360.603723%
B5962420.704462%
C5959120.201376%
D5959210.352408%

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 7350 6032 9 9 0.12% 0.15%
B 7350 6029 0 0 0.00% 0.00%
C 7350 6028 0 0 0.00% 0.00%
D 7350 6027 2 2 0.03% 0.03%

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 15 239 340241 2284.55 725 711 148.6
A 0 226 6520 39.09 725 711 148.6
A 12 194 5803 34.26 725 711 148.6
B 12 111 16108 110.2 735 719 139.6
B 11 111 13571 92.03 735 719 139.6
B 14 111 11254 75.44 735 719 139.6
C 9 221 7522 41.59 708 713 163.7
C 13 61 5288 27.95 708 713 163.7
C 14 67 3316 15.9 708 713 163.7
D 2 16 182277 1007.47 691 676 180.3
D 8 195 69627 382.52 691 676 180.3
D 1 52 26676 144.24 691 676 180.3

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