ASTROSAT CZTI

Data Quality Report

Orbit 34177

Creation date: 2024-06-27T20:57:27.399241
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/AS1A11_047T15_9000004882_34177cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34177cztM0_level2_quad_clean.evt
Size (bytes)480,548,16092,393,280
Size458.3 MB 88.1 MB
Events in quadrant A2,500,041628,930
Events in quadrant B3,356,255638,453
Events in quadrant C4,041,517601,756
Events in quadrant D4,301,786563,302

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106383
B0132592
C0154702
D0163312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521270.134305%
B52122234.278588%
C52122524.834996%
D52122364.528012%

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 7367 5213 0 0 0.00% 0.00%
B 7367 5213 134 134 1.82% 2.57%
C 7367 5213 230 230 3.12% 4.41%
D 7367 5213 212 212 2.88% 4.07%

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 10 83 21013 159.57 637 626 127.8
A 13 6 17501 132.08 637 626 127.8
A 13 254 9640 70.55 637 626 127.8
B 5 172 320411 2666.2 629 614 119.9
B 5 31 202307 1681.55 629 614 119.9
B 0 229 79293 655.96 629 614 119.9
C 0 239 697734 4988.43 605 611 139.7
C 0 10 355545 2539.82 605 611 139.7
C 14 254 322779 2305.35 605 611 139.7
D 8 195 1015015 7016.8 595 579 144.6
D 10 118 692372 4785.09 595 579 144.6
D 2 120 72523 497.63 595 579 144.6

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