ASTROSAT CZTI

Data Quality Report

Orbit 11762

Creation date: 2024-06-27T16:17:57.911248
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/AS1A04_231T01_9000001740_11762cztM0_level2.evt modeM0/AS1A04_231T01_9000001740_11762cztM0_level2_quad_clean.evt
Size (bytes)403,698,24077,120,640
Size385.0 MB 73.5 MB
Events in quadrant A3,064,392501,375
Events in quadrant B3,441,297501,500
Events in quadrant C2,134,988514,124
Events in quadrant D3,257,766480,119

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124332
B0135901
C097411
D0130181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48172104.359560%
B48173557.369732%
C4817210.435956%
D48172044.235001%

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 5773 4819 61 61 1.06% 1.27%
B 5773 4819 175 175 3.03% 3.63%
C 5773 4819 0 0 0.00% 0.00%
D 5773 4819 172 172 2.98% 3.57%

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 8 15 220523 1925.27 549 537 114.3
A 5 16 218359 1906.33 549 537 114.3
A 1 162 137671 1200.17 549 537 114.3
B 4 239 592758 5644.14 545 531 104.9
B 10 16 217666 2069.38 545 531 104.9
B 3 64 206815 1965.96 545 531 104.9
C 13 61 4209 28.53 547 549 128.3
C 3 202 1414 6.74 547 549 128.3
C -1 -1 -1 -1.0 547 549 128.3
D 1 52 968611 7503.5 535 520 129.0
D 13 249 62771 482.5 535 520 129.0
D 10 199 45521 348.79 535 520 129.0

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