ASTROSAT CZTI

Data Quality Report

Orbit 41837

Creation date: 2024-06-27T22:33:26.368781
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_41837cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41837cztM0_level2_quad_clean.evt
Size (bytes)329,857,92090,918,720
Size314.6 MB 86.7 MB
Events in quadrant A3,671,522616,287
Events in quadrant B2,328,162646,982
Events in quadrant C3,248,841576,495
Events in quadrant D2,575,968566,098

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140912
B0100862
C0125373
D0109032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49531482.988088%
B4953170.343226%
C49522996.037964%
D4952220.444265%

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 7074 4954 109 109 1.54% 2.20%
B 7074 4954 7 7 0.10% 0.14%
C 7073 4953 292 292 4.13% 5.90%
D 7073 4953 15 15 0.21% 0.30%

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 901787 7684.36 580 571 117.3
A 10 83 511586 4357.25 580 571 117.3
A 13 248 6948 54.37 580 571 117.3
B 5 255 23200 208.18 577 561 108.7
B 0 183 16673 148.16 577 561 108.7
B 12 111 13347 117.58 577 561 108.7
C 0 10 872649 6934.62 541 544 125.8
C 15 214 197865 1569.01 541 544 125.8
C 14 254 51650 406.37 541 544 125.8
D 13 249 115081 843.75 569 555 135.7
D 5 222 105024 769.66 569 555 135.7
D 2 249 50172 365.55 569 555 135.7

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