ASTROSAT CZTI

Data Quality Report

Orbit 31603

Creation date: 2024-06-27T20:30:34.750792
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/AS1C06_002T03_9000004610_31603cztM0_level2.evt modeM0/AS1C06_002T03_9000004610_31603cztM0_level2_quad_clean.evt
Size (bytes)797,195,520124,882,560
Size760.3 MB 119.1 MB
Events in quadrant A5,836,079795,825
Events in quadrant B5,580,800889,927
Events in quadrant C3,731,812874,124
Events in quadrant D8,515,363726,945

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02226312
B02183714
C0157266
D03035259

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01430
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7098137219.329389%
B71003014.239437%
C71022433.421571%
D7086158822.410387%

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 7311 7103 857 857 11.72% 12.07%
B 7310 7104 24 24 0.33% 0.34%
C 7311 7103 22 22 0.30% 0.31%
D 7312 7098 1130 1130 15.45% 15.92%

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 2919771 19496.33 745 730 149.7
A 15 174 38530 252.47 745 730 149.7
A 13 254 12347 77.59 745 730 149.7
B 6 159 2027269 13005.65 821 799 155.8
B 5 172 116168 740.43 821 799 155.8
B 4 80 97423 620.12 821 799 155.8
C 3 233 361029 1917.07 799 802 187.9
C 14 238 138413 732.34 799 802 187.9
C 14 225 58583 307.5 799 802 187.9
D 8 195 2836506 16880.64 704 684 168.0
D 12 2 2706095 16104.35 704 684 168.0
D 13 249 160318 950.24 704 684 168.0

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