ASTROSAT CZTI

Data Quality Report

Orbit 26720

Creation date: 2024-06-27T19:32:06.781448
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_26720cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26720cztM0_level2_quad_clean.evt
Size (bytes)612,941,76088,983,360
Size584.5 MB 84.9 MB
Events in quadrant A3,252,509591,996
Events in quadrant B5,146,774589,281
Events in quadrant C3,148,555568,295
Events in quadrant D6,612,922529,898

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129810
B0189150
C0126600
D0236280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5943530.891805%
B594389415.042908%
C5943631.060071%
D5943113419.081272%

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 7278 5944 8 8 0.11% 0.13%
B 7278 5944 587 587 8.07% 9.88%
C 7278 5944 0 0 0.00% 0.00%
D 7278 5944 974 974 13.38% 16.39%

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 80175 488.5 823 810 162.5
A 13 254 9445 53.15 823 810 162.5
A 0 226 7283 39.84 823 810 162.5
B 0 189 2092918 14683.32 762 746 142.5
B 10 246 32838 225.23 762 746 142.5
B 12 111 16486 110.46 762 746 142.5
C 14 238 128009 717.5 769 777 177.3
C 15 208 17974 96.98 769 777 177.3
C 3 233 6286 31.07 769 777 177.3
D 1 52 1330960 7014.27 714 699 189.7
D 7 80 1309467 6900.94 714 699 189.7
D 12 233 1215634 6406.18 714 699 189.7

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