ASTROSAT CZTI

Data Quality Report

Orbit 20180405_A04_212T03_9000002016_level2

Creation date: 2025-11-20T15:15:32.672568
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_212T03_9000002016cztM0_level2.fits modeM0/AS1A04_212T03_9000002016cztM0_level2_quad_clean.evt
Size (bytes)125,406,72096,016,320
Size119.6 MB 91.6 MB
Events in quadrant A783,230544,677
Events in quadrant B749,142539,589
Events in quadrant C760,024510,818
Events in quadrant D657,296463,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261920
B0303060
C0254680
D0331160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A122632201.794015%
B122633602.935660%
C12263970.790997%
D122634223.441246%

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 14878 12263 0 0 0.00% 0.00%
B 14878 12262 0 0 0.00% 0.00%
C 14878 12263 0 0 0.00% 0.00%
D 14878 12263 0 0 0.00% 0.00%

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 29 703 9.91 204 193 51.5
A 7 110 644 8.76 204 193 51.5
A 9 19 600 7.91 204 193 51.5
B 2 9 656 11.37 198 190 41.0
B 2 8 508 7.76 198 190 41.0
B 5 128 502 7.61 198 190 41.0
C 1 81 595 7.7 200 189 52.7
C 1 80 567 7.17 200 189 52.7
C 12 241 535 6.57 200 189 52.7
D 6 231 557 7.74 187 171 49.9
D 10 189 485 6.3 187 171 49.9
D 6 83 482 6.24 187 171 49.9

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