ASTROSAT CZTI

Data Quality Report

Orbit 20200503_A07_027T02_9000003640_level2

Creation date: 2025-01-06T14:21:38.374868
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/AS1A07_027T02_9000003640cztM0_level2.fits modeM0/AS1A07_027T02_9000003640cztM0_level2_quad_clean.evt
Size (bytes)632,180,160509,250,240
Size602.9 MB 485.7 MB
Events in quadrant A3,906,1202,906,660
Events in quadrant B3,753,3302,930,876
Events in quadrant C3,778,8302,686,248
Events in quadrant D3,377,2802,568,329

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012840
B012840
C012840
D012840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01387470
B01339590
C01601620
D01702860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6310612652.004564%
B631068701.378633%
C6310534065.397354%
D6310518142.874574%

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 75425 63106 0 0 0.00% 0.00%
B 75425 63106 0 0 0.00% 0.00%
C 75425 63089 0 0 0.00% 0.00%
D 75424 63094 0 0 0.00% 0.00%

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 29 3755 11.38 1018 959 245.7
A 7 110 3054 8.53 1018 959 245.7
A 9 19 3004 8.32 1018 959 245.7
B 2 9 3085 10.94 994 952 194.9
B 2 8 2554 8.22 994 952 194.9
B 3 17 2545 8.17 994 952 194.9
C 3 126 2615 6.61 1000 941 253.2
C 12 241 2592 6.52 1000 941 253.2
C 7 111 2520 6.24 1000 941 253.2
D 6 231 2423 6.09 963 878 253.7
D 10 189 2366 5.86 963 878 253.7
D 15 46 2304 5.62 963 878 253.7

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