ASTROSAT CZTI

Data Quality Report

Orbit 55161

Creation date: 2025-12-08T18:15:27.927776
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_022T16_9000006532_55161cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55161cztM0_level2_quad_clean.evt
Size (bytes)481,553,280102,530,880
Size459.2 MB 97.8 MB
Events in quadrant A5,895,391644,508
Events in quadrant B3,537,056719,807
Events in quadrant C3,626,457632,620
Events in quadrant D4,196,964596,894

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226040
B0161290
C0164290
D0177580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73324526.164757%
B73331041.418246%
C7333911.240965%
D73331081.472794%

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 7332 7332 376 376 5.13% 5.13%
B 7333 7333 64 64 0.87% 0.87%
C 7333 7333 76 76 1.04% 1.04%
D 7333 7333 114 114 1.55% 1.55%

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 3 78 2610799 13992.64 751 732 186.5
A 11 191 200999 1073.63 751 732 186.5
A 0 8 60322 319.46 751 732 186.5
B 5 185 204419 1257.71 749 723 162.0
B 2 249 172220 1058.9 749 723 162.0
B 4 81 134177 824.0 749 723 162.0
C 13 3 268859 1327.93 735 728 201.9
C 10 22 111289 547.56 735 728 201.9
C 14 254 80918 397.15 735 728 201.9
D 11 176 440401 2142.36 734 705 205.2
D 2 249 384618 1870.56 734 705 205.2
D 11 129 225552 1095.54 734 705 205.2

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