ASTROSAT CZTI

Data Quality Report

Orbit 25846

Creation date: 2024-06-27T19:22:01.994916
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_068T01_9000003756_25846cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25846cztM0_level2_quad_clean.evt
Size (bytes)1,462,628,160239,567,040
Size1.4 GB 228.5 MB
Events in quadrant A9,971,9781,543,026
Events in quadrant B8,918,9451,556,457
Events in quadrant C8,886,8791,481,547
Events in quadrant D15,262,9721,393,687

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409490
B0382660
C0381920
D0575810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185822861.539124%
B185833081.657429%
C185834042.174030%
D18583203610.956250%

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 20892 18587 0 0 0.00% 0.00%
B 20893 18588 1 1 0.00% 0.01%
C 20893 18588 1 1 0.00% 0.01%
D 20893 18588 1714 1714 8.20% 9.22%

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 6 16 1146129 2509.67 2279 2232 455.8
A 0 13 41529 86.22 2279 2232 455.8
A 13 254 24565 49.0 2279 2232 455.8
B 6 36 60250 134.21 2254 2197 432.6
B 12 111 55041 122.16 2254 2197 432.6
B 11 111 49992 110.49 2254 2197 432.6
C 14 238 343692 669.76 2168 2179 509.9
C 3 233 87455 167.24 2168 2179 509.9
C 13 61 14781 24.71 2168 2179 509.9
D 12 233 3334403 6613.25 2113 2061 503.9
D 1 52 3217410 6381.07 2113 2061 503.9
D 7 80 384891 759.75 2113 2061 503.9

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