ASTROSAT CZTI

Data Quality Report

Orbit 41835

Creation date: 2024-06-27T22:33:24.507572
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_099T04_9000005708_41835cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41835cztM0_level2_quad_clean.evt
Size (bytes)391,222,08087,076,800
Size373.1 MB 83.0 MB
Events in quadrant A5,612,445495,388
Events in quadrant B2,349,220647,536
Events in quadrant C3,237,751576,540
Events in quadrant D2,881,672556,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200653
B0103602
C0126212
D0120922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5144119223.172628%
B514470.136081%
C51442655.151633%
D5144861.671851%

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 7056 5145 809 809 11.47% 15.72%
B 7056 5145 0 0 0.00% 0.00%
C 7056 5145 255 255 3.61% 4.96%
D 7056 5145 73 73 1.03% 1.42%

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 14 24 3160976 30381.55 509 500 104.0
A 10 83 449825 4319.35 509 500 104.0
A 2 79 23838 224.35 509 500 104.0
B 0 183 21104 184.83 589 575 111.1
B 12 111 13570 117.0 589 575 111.1
B 11 111 12409 106.54 589 575 111.1
C 0 10 748479 5805.95 559 562 128.8
C 15 214 206104 1595.59 559 562 128.8
C 14 254 103064 795.71 559 562 128.8
D 13 249 211502 1508.26 577 561 139.9
D 2 249 174506 1243.74 577 561 139.9
D 5 222 133576 951.08 577 561 139.9

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