ASTROSAT CZTI

Data Quality Report

Orbit 20161222_G06_145T01_9000000914_level2

Creation date: 2025-11-08T20:57:08.624611
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_145T01_9000000914cztM0_level2.fits modeM0/AS1G06_145T01_9000000914cztM0_level2_quad_clean.evt
Size (bytes)140,086,080118,474,560
Size133.6 MB 113.0 MB
Events in quadrant A847,982665,805
Events in quadrant B828,510684,820
Events in quadrant C857,016662,210
Events in quadrant D675,846541,581

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312790
B0323930
C0305350
D0588300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149601240.828877%
B149601591.062834%
C14960520.347594%
D14960178311.918449%

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 17534 14956 0 0 0.00% 0.00%
B 17534 14959 0 0 0.00% 0.00%
C 17534 14959 0 0 0.00% 0.00%
D 17534 14934 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 29 806 10.57 220 207 56.7
A 7 110 703 8.75 220 207 56.7
A 0 30 660 7.99 220 207 56.7
B 2 9 720 11.15 219 210 45.7
B 12 226 641 9.42 219 210 45.7
B 5 128 635 9.29 219 210 45.7
C 1 81 678 7.76 226 212 60.0
C 1 80 634 7.03 226 212 60.0
C 1 65 600 6.46 226 212 60.0
D 6 83 517 6.38 193 176 53.4
D 10 189 503 6.12 193 176 53.4
D 7 5 498 6.03 193 176 53.4

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