ASTROSAT CZTI

Data Quality Report

Orbit 04790

Creation date: 2024-06-27T14:47:03.388205
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/AS1G05_156T09_9000000604_04790cztM0_level2.evt modeM0/AS1G05_156T09_9000000604_04790cztM0_level2_quad_clean.evt
Size (bytes)543,628,80075,116,160
Size518.4 MB 71.6 MB
Events in quadrant A3,083,043502,579
Events in quadrant B4,407,263464,328
Events in quadrant C3,222,839488,539
Events in quadrant D5,332,188387,890

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133172
B0172901
C0137901
D0200521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6166741.200130%
B61664327.006163%
C6166360.583847%
D6166104917.012650%

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 7461 6167 33 33 0.44% 0.54%
B 7461 6167 344 344 4.61% 5.58%
C 7461 6167 0 0 0.00% 0.00%
D 7460 6166 937 937 12.56% 15.20%

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 0 50 119960 815.22 730 716 146.3
A 0 149 51522 347.34 730 716 146.3
A 0 118 48263 325.06 730 716 146.3
B 14 167 1123105 8299.27 715 698 135.2
B 15 204 211914 1561.77 715 698 135.2
B 0 219 183860 1354.33 715 698 135.2
C 8 208 403959 2437.79 718 722 165.4
C 1 3 8149 44.9 718 722 165.4
C 13 61 5940 31.55 718 722 165.4
D 1 52 2214249 14674.12 632 613 150.9
D 13 235 289839 1917.27 632 613 150.9
D 2 63 133507 880.95 632 613 150.9

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