ASTROSAT CZTI

Data Quality Report

Orbit 08848

Creation date: 2024-06-27T15:38:01.912834
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/AS1A03_036T01_9000001230_08848cztM0_level2.evt modeM0/AS1A03_036T01_9000001230_08848cztM0_level2_quad_clean.evt
Size (bytes)560,249,280107,115,840
Size534.3 MB 102.2 MB
Events in quadrant A4,477,599668,957
Events in quadrant B3,880,907692,870
Events in quadrant C3,523,184681,481
Events in quadrant D4,555,924657,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188683
B0169372
C0161212
D0190802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78152723.480486%
B78151461.868202%
C7815300.383877%
D7815891.138836%

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 8450 7817 158 158 1.87% 2.02%
B 8450 7817 10 10 0.12% 0.13%
C 8450 7817 1 1 0.01% 0.01%
D 8450 7817 33 33 0.39% 0.42%

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 15 174 510250 2743.25 901 880 185.7
A 8 5 443923 2386.04 901 880 185.7
A 13 251 22466 116.25 901 880 185.7
B 0 214 56878 316.43 925 901 176.9
B 5 255 48571 269.47 925 901 176.9
B 4 80 42205 233.48 925 901 176.9
C 1 3 7103 29.68 898 900 209.0
C 13 61 6896 28.69 898 900 209.0
C 8 128 4263 16.09 898 900 209.0
D 2 152 426337 1768.97 887 864 240.5
D 1 52 269155 1115.46 887 864 240.5
D 13 105 170376 704.77 887 864 240.5

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