ASTROSAT CZTI

Data Quality Report

Orbit 36477

Creation date: 2022-06-27T17:25:54.184318
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_049T03_9000005208_36477cztM0_level2.evt modeM0/AS1A11_049T03_9000005208_36477cztM0_level2_quad_clean.evt
Size (bytes)429,180,48097,286,400
Size409.3 MB 92.8 MB
Events in quadrant A2,769,432665,999
Events in quadrant B2,836,622667,271
Events in quadrant C3,107,172644,013
Events in quadrant D3,939,002612,359

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113303
B0116052
C0123672
D0150422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5088110.216195%
B5088150.294811%
C50881212.378145%
D50881983.891509%

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 7092 5089 1 1 0.01% 0.02%
B 7092 5089 11 11 0.16% 0.22%
C 7092 5089 71 71 1.00% 1.40%
D 7092 5089 167 167 2.35% 3.28%

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 10 83 193841 1483.24 654 645 130.3
A 10 248 35800 269.9 654 645 130.3
A 13 254 8646 61.43 654 645 130.3
B 0 189 80168 654.52 638 623 121.5
B 5 172 58730 478.12 638 623 121.5
B 4 171 53640 436.24 638 623 121.5
C 0 10 450427 3194.82 613 620 140.8
C 15 214 219838 1557.03 613 620 140.8
C 0 207 36650 255.91 613 620 140.8
D 12 235 659335 4369.18 623 608 150.8
D 13 249 430791 2853.3 623 608 150.8
D 10 199 95304 628.1 623 608 150.8

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