ASTROSAT CZTI

Data Quality Report

Orbit 20170131_G06_154T03_9000000996_level2

Creation date: 2025-11-09T08:16:05.850842
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/AS1G06_154T03_9000000996cztM0_level2.fits modeM0/AS1G06_154T03_9000000996cztM0_level2_quad_clean.evt
Size (bytes)542,563,200527,025,600
Size517.4 MB 502.6 MB
Events in quadrant A3,248,9823,099,904
Events in quadrant B3,179,8043,135,582
Events in quadrant C3,248,4503,002,475
Events in quadrant D2,778,5502,747,318

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01217490
B01231610
C01199490
D01328500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011800
B011800
C011800
D011800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A579506961.201035%
B579508141.404659%
C579504270.736842%
D5795012822.212252%

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 68402 57940 0 0 0.00% 0.00%
B 68402 57945 0 0 0.00% 0.00%
C 68402 57947 0 0 0.00% 0.00%
D 68402 57907 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 3163 11.06 844 785 215.1
A 7 110 2769 9.23 844 785 215.1
A 0 30 2498 7.97 844 785 215.1
B 2 9 2760 11.67 837 794 168.4
B 5 225 2123 7.89 837 794 168.4
B 5 128 2122 7.89 837 794 168.4
C 1 81 2403 7.11 856 790 226.9
C 1 80 2356 6.9 856 790 226.9
C 12 241 2219 6.3 856 790 226.9
D 6 231 2086 6.32 791 716 216.8
D 3 14 2032 6.07 791 716 216.8
D 11 82 1995 5.9 791 716 216.8

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