ASTROSAT CZTI

Data Quality Report

Orbit 58700

Creation date: 2026-08-03T19:22:31.928618
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/AS1A14_004T06_9000006594_58700cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58700cztM0_level2_quad_clean.evt
Size (bytes)610,133,76095,688,000
Size581.9 MB 91.3 MB
Events in quadrant A3,270,467678,945
Events in quadrant B4,200,742703,435
Events in quadrant C3,993,861643,930
Events in quadrant D10,604,848408,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014385223
B017197296
C016631299
D036524451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01362
C01362
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66421101.656128%
B66363765.666064%
C66331742.623247%
D6625265840.120755%

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 7751 6656 11 11 0.14% 0.17%
B 7740 6651 178 178 2.30% 2.68%
C 7750 6650 98 98 1.26% 1.47%
D 7741 6641 2128 2128 27.49% 32.04%

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 12 114 122808 641.01 769 750 190.4
A 3 14 100873 525.81 769 750 190.4
A 10 251 53610 277.6 769 750 190.4
B 5 172 736631 4639.34 741 713 158.6
B 6 255 301347 1895.24 741 713 158.6
B 2 249 70453 439.65 741 713 158.6
C 12 252 258744 1284.53 736 729 200.9
C 6 223 248054 1231.31 736 729 200.9
C 13 3 193898 961.69 736 729 200.9
D 11 129 6588344 37407.58 618 590 176.1
D 2 62 698959 3965.58 618 590 176.1
D 8 240 432446 2452.23 618 590 176.1

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