ASTROSAT CZTI

Data Quality Report

Orbit 27163

Creation date: 2024-06-27T19:37:09.653211
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_245T01_9000003916_27163cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27163cztM0_level2_quad_clean.evt
Size (bytes)1,405,128,960242,314,560
Size1.3 GB 231.1 MB
Events in quadrant A8,895,2661,546,474
Events in quadrant B9,258,3511,576,423
Events in quadrant C8,859,6441,510,970
Events in quadrant D14,295,7931,434,217

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380300
B0384290
C0378870
D0547180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184462481.344465%
B184472421.311866%
C184473391.837697%
D1844612016.510897%

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 20246 18449 8 8 0.04% 0.04%
B 20247 18450 1 1 0.00% 0.01%
C 20247 18450 4 4 0.02% 0.02%
D 20246 18449 952 952 4.70% 5.16%

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 4 2 89067 191.3 2253 2203 454.1
A 13 248 69946 149.19 2253 2203 454.1
A 13 254 30762 62.89 2253 2203 454.1
B 3 112 215169 499.88 2241 2180 426.1
B 0 190 60348 136.52 2241 2180 426.1
B 7 205 58294 131.7 2241 2180 426.1
C 14 238 342222 673.68 2156 2164 504.8
C 15 208 62068 118.67 2156 2164 504.8
C 2 16 23218 41.71 2156 2164 504.8
D 1 52 2832516 5260.93 2119 2069 538.0
D 7 38 1456233 2702.84 2119 2069 538.0
D 2 250 693935 1285.97 2119 2069 538.0

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