ASTROSAT CZTI

Data Quality Report

Orbit 14925

Creation date: 2024-06-27T17:01:24.380207
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/AS1A04_099T01_9000002204_14925cztM0_level2.evt modeM0/AS1A04_099T01_9000002204_14925cztM0_level2_quad_clean.evt
Size (bytes)459,449,28077,080,320
Size438.2 MB 73.5 MB
Events in quadrant A3,392,196479,915
Events in quadrant B3,446,646480,822
Events in quadrant C3,404,215460,196
Events in quadrant D3,225,028455,081

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138843
B0140922
C0138422
D0138372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65701522.313546%
B65701882.861492%
C65701352.054795%
D65701322.009132%

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 8796 6573 0 0 0.00% 0.00%
B 8796 6573 4 4 0.05% 0.06%
C 8796 6573 0 0 0.00% 0.00%
D 8796 6573 11 11 0.13% 0.17%

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 12 189 50544 286.47 867 851 173.5
A 0 226 7636 39.11 867 851 173.5
A 12 194 6312 31.48 867 851 173.5
B 0 229 48865 291.89 854 833 164.6
B 0 85 23361 136.9 854 833 164.6
B 4 80 21533 125.79 854 833 164.6
C 3 233 142728 735.75 830 837 192.9
C 7 247 21172 105.44 830 837 192.9
C 13 61 5881 26.15 830 837 192.9
D 13 249 51695 255.98 834 814 198.8
D 13 104 23060 111.92 834 814 198.8
D 2 234 20942 101.26 834 814 198.8

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