ASTROSAT CZTI

Data Quality Report

Orbit 42550

Creation date: 2024-06-27T22:41:30.828565
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/AS1A12_102T01_9000005812_42550cztM0_level2.fits modeM0/AS1A12_102T01_9000005812_42550cztM0_level2_quad_clean.evt
Size (bytes)329,996,16090,933,120
Size314.7 MB 86.7 MB
Events in quadrant A3,077,320612,246
Events in quadrant B2,639,087617,027
Events in quadrant C2,497,512585,783
Events in quadrant D3,565,901546,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126512
B0119232
C0112052
D0145502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5590210.375671%
B5590671.198569%
C559030.053667%
D5590771.377460%

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 7324 5591 12 12 0.16% 0.21%
B 7324 5591 48 48 0.66% 0.86%
C 7324 5591 0 0 0.00% 0.00%
D 7324 5591 71 71 0.97% 1.27%

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 585382 4818.56 593 580 121.4
A 2 79 115421 946.25 593 580 121.4
A 13 248 47653 387.86 593 580 121.4
B 5 172 225370 1980.55 586 570 113.5
B 0 245 41901 364.14 586 570 113.5
B 0 186 26024 224.26 586 570 113.5
C 15 214 236910 1763.34 578 581 134.0
C 14 254 4160 26.7 578 581 134.0
C 12 249 4084 26.14 578 581 134.0
D 2 16 596798 4262.32 579 563 139.9
D 1 52 444721 3175.16 579 563 139.9
D 2 249 85429 606.68 579 563 139.9

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