ASTROSAT CZTI

Data Quality Report

Orbit 33726

Creation date: 2024-06-27T20:51:51.409926
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_086T01_9000004816_33726cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33726cztM0_level2_quad_clean.evt
Size (bytes)470,393,28065,675,520
Size448.6 MB 62.6 MB
Events in quadrant A2,934,566412,882
Events in quadrant B3,483,611407,742
Events in quadrant C3,235,101414,825
Events in quadrant D4,241,546390,122

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120243
B0138342
C0129652
D0162162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51781072.066435%
B51781593.070684%
C5178691.332561%
D51781663.205871%

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 7150 5179 95 95 1.33% 1.83%
B 7150 5179 114 114 1.59% 2.20%
C 7150 5179 53 53 0.74% 1.02%
D 7150 5179 147 147 2.06% 2.84%

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 4 242594 1803.16 685 674 134.2
A 15 237 27300 198.46 685 674 134.2
A 10 83 9579 66.37 685 674 134.2
B 5 172 493380 3868.8 687 672 127.4
B 0 245 134517 1050.97 687 672 127.4
B 15 85 49947 386.91 687 672 127.4
C 0 10 243184 1583.75 678 684 153.1
C 15 214 224732 1463.24 678 684 153.1
C 9 54 58018 374.44 678 684 153.1
D 8 195 868642 5314.79 672 654 163.3
D 2 250 220013 1343.16 672 654 163.3
D 13 249 192443 1174.35 672 654 163.3

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