ASTROSAT CZTI

Data Quality Report

Orbit 20403

Creation date: 2024-06-27T18:14:57.003312
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/AS1A05_198T01_9000003014_20403cztM0_level2.evt modeM0/AS1A05_198T01_9000003014_20403cztM0_level2_quad_clean.evt
Size (bytes)1,372,273,920218,511,360
Size1.3 GB 208.4 MB
Events in quadrant A9,149,8461,360,178
Events in quadrant B10,338,2041,352,974
Events in quadrant C9,177,9641,295,554
Events in quadrant D11,586,7881,277,454

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397214
B0428354
C0395154
D0477054

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193212741.418146%
B193224552.354829%
C193223101.604389%
D1932210405.382466%

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 20776 19323 6 6 0.03% 0.03%
B 20777 19325 97 97 0.47% 0.50%
C 20777 19326 0 0 0.00% 0.00%
D 20777 19326 685 685 3.30% 3.54%

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 5 16 73985 151.49 2353 2301 473.2
A 0 226 20046 37.5 2353 2301 473.2
A 3 137 19969 37.34 2353 2301 473.2
B 7 220 566841 1266.37 2321 2255 445.8
B 10 245 264915 589.15 2321 2255 445.8
B 0 189 244031 542.3 2321 2255 445.8
C 14 238 348680 653.03 2250 2260 530.5
C 7 220 24529 41.98 2250 2260 530.5
C 8 128 19551 32.59 2250 2260 530.5
D 1 52 2926198 5372.61 2251 2186 544.2
D 13 153 84028 150.38 2251 2186 544.2
D 2 234 79144 141.4 2251 2186 544.2

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