ASTROSAT CZTI

Data Quality Report

Orbit 26721

Creation date: 2024-06-27T19:32:07.658679
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/AS1T03_223T01_9000003850_26721cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26721cztM0_level2_quad_clean.evt
Size (bytes)580,694,40084,720,960
Size553.8 MB 80.8 MB
Events in quadrant A3,600,020550,235
Events in quadrant B4,675,290550,677
Events in quadrant C3,259,632536,398
Events in quadrant D5,639,178502,823

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142480
B0176050
C0130320
D0208550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60891352.217113%
B60885779.477661%
C6088821.346912%
D60885669.296978%

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 7394 6090 43 43 0.58% 0.71%
B 7393 6089 374 374 5.06% 6.14%
C 7393 6089 1 1 0.01% 0.02%
D 7393 6089 449 449 6.07% 7.37%

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 0 13 341019 2039.68 845 832 166.8
A 13 254 9418 51.48 845 832 166.8
A 0 226 7292 38.73 845 832 166.8
B 0 189 1361009 9078.3 806 790 149.8
B 10 246 105603 699.53 806 790 149.8
B 4 171 29595 192.25 806 790 149.8
C 14 238 130646 714.03 793 798 181.9
C 15 208 26943 143.77 793 798 181.9
C 3 233 6685 32.37 793 798 181.9
D 7 80 1450161 6938.95 787 772 208.9
D 1 52 972346 4651.41 787 772 208.9
D 2 250 153088 729.21 787 772 208.9

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