ASTROSAT CZTI

Data Quality Report

Orbit 12182

Creation date: 2024-06-27T16:23:30.286986
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_160T01_9000001798_12182cztM0_level2.evt modeM0/AS1A04_160T01_9000001798_12182cztM0_level2_quad_clean.evt
Size (bytes)538,902,720111,113,280
Size513.9 MB 106.0 MB
Events in quadrant A3,272,439754,941
Events in quadrant B5,316,334706,329
Events in quadrant C3,688,659750,959
Events in quadrant D3,624,852721,896

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138062
B0198771
C0151391
D0145281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61651612.611517%
B616599516.139497%
C61652103.406326%
D61651883.049473%

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 7131 6167 32 32 0.45% 0.52%
B 7131 6167 555 555 7.78% 9.00%
C 7131 6167 127 127 1.78% 2.06%
D 7131 6167 137 137 1.92% 2.22%

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 1 162 124447 853.23 714 697 145.0
A 8 15 108413 742.68 714 697 145.0
A 9 143 92764 634.78 714 697 145.0
B 4 239 2187598 17508.48 665 651 124.9
B 15 204 159497 1271.71 665 651 124.9
B 11 51 105606 840.26 665 651 124.9
C 15 208 950415 5911.12 698 701 160.7
C 14 234 8153 46.38 698 701 160.7
C 4 175 7562 42.7 698 701 160.7
D 8 195 321472 1937.93 696 677 165.5
D 7 71 290598 1751.42 696 677 165.5
D 14 34 99447 596.67 696 677 165.5

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