ASTROSAT CZTI

Data Quality Report

Orbit 20170917_A03_097T01_9000001540_level2

Creation date: 2025-11-17T05:12:55.768296
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/AS1A03_097T01_9000001540cztM0_level2.fits modeM0/AS1A03_097T01_9000001540cztM0_level2_quad_clean.evt
Size (bytes)1,759,138,5601,637,893,440
Size1.6 GB 1.5 GB
Events in quadrant A10,303,1909,209,358
Events in quadrant B10,214,3009,595,454
Events in quadrant C10,662,9829,507,294
Events in quadrant D8,884,0868,095,097

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03170
B03170
C03170
D03170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04884370
B05187980
C04067570
D05726280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039200
B039200
C039200
D039180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192635138717.200664%
B192640118166.133721%
C19264723991.245283%
D192645120956.278388%

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 223795 191653 0 0 0.00% 0.00%
B 223796 192609 0 0 0.00% 0.00%
C 223795 192622 0 0 0.00% 0.00%
D 223795 192570 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 9926 11.11 2682 2509 667.4
A 7 110 8570 9.08 2682 2509 667.4
A 9 19 7862 8.02 2682 2509 667.4
B 2 9 8798 11.75 2695 2565 530.5
B 3 17 6920 8.21 2695 2565 530.5
B 12 226 6811 8.0 2695 2565 530.5
C 1 80 8140 7.57 2817 2617 729.4
C 1 81 7981 7.35 2817 2617 729.4
C 12 241 7367 6.51 2817 2617 729.4
D 3 14 6469 6.17 2537 2299 676.1
D 6 231 6427 6.1 2537 2299 676.1
D 10 189 6322 5.95 2537 2299 676.1

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