ASTROSAT CZTI

Data Quality Report

Orbit 31218

Creation date: 2024-06-27T20:25:10.171548
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/AS1T04_019T01_9000004516_31218cztM0_level2.evt modeM0/AS1T04_019T01_9000004516_31218cztM0_level2_quad_clean.evt
Size (bytes)444,139,20058,944,960
Size423.6 MB 56.2 MB
Events in quadrant A2,373,963370,290
Events in quadrant B3,877,176370,775
Events in quadrant C2,539,146352,236
Events in quadrant D4,326,904346,008

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100781
B0148261
C0104721
D0165761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4924571.157595%
B4924871.766856%
C49241242.518278%
D49241212.457352%

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 5769 4925 0 0 0.00% 0.00%
B 5769 4925 0 0 0.00% 0.00%
C 5769 4925 11 11 0.19% 0.22%
D 5769 4925 65 65 1.13% 1.32%

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 9805 74.31 613 602 123.8
A 13 254 7888 58.83 613 602 123.8
A 3 137 6355 46.46 613 602 123.8
B 6 159 1512331 12875.88 601 586 117.4
B 12 111 14915 122.04 601 586 117.4
B 11 111 13687 111.58 601 586 117.4
C 14 238 100489 725.41 580 586 137.7
C 0 10 98798 713.13 580 586 137.7
C 3 233 31689 225.84 580 586 137.7
D 8 195 2093777 15129.5 585 572 138.4
D 12 79 23873 168.42 585 572 138.4
D 2 234 15980 111.37 585 572 138.4

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