ASTROSAT CZTI

Data Quality Report

Orbit 01091

Creation date: 2024-06-27T14:07:21.216088
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/AS1P01_997T02_9000000212_01091cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01091cztM0_level2_quad_clean.evt
Size (bytes)1,127,148,480106,666,560
Size1.0 GB 101.7 MB
Events in quadrant A8,317,959695,644
Events in quadrant B8,860,323692,638
Events in quadrant C8,644,965671,695
Events in quadrant D7,835,446669,583

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298412
B0314801
C0308211
D0283971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A719440.055602%
B7194190.264109%
C719490.125104%
D7194170.236308%

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 7569 7196 142 142 1.88% 1.97%
B 7569 7196 257 257 3.40% 3.57%
C 7569 7196 211 211 2.79% 2.93%
D 7569 7196 126 126 1.66% 1.75%

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 11 79 11508 17.89 2164 2175 521.6
A 13 9 10735 16.41 2164 2175 521.6
A 3 111 6617 8.52 2164 2175 521.6
B 5 191 89536 164.43 2256 2261 530.8
B 15 22 66718 121.44 2256 2261 530.8
B 4 187 45090 80.69 2256 2261 530.8
C 15 241 338426 576.54 2084 2156 583.3
C 10 207 84515 141.21 2084 2156 583.3
C 3 79 33438 53.63 2084 2156 583.3
D 2 216 187475 296.21 2013 2080 625.9
D 2 107 58530 90.19 2013 2080 625.9
D 10 125 39752 60.19 2013 2080 625.9

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