ASTROSAT CZTI

Data Quality Report

Orbit 20251114_A14_039T06_9000006526_level2

Creation date: 2025-12-15T20:04:07.241381
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_039T06_9000006526cztM0_level2.fits modeM0/AS1A14_039T06_9000006526cztM0_level2_quad_clean.evt
Size (bytes)4,474,886,4002,306,416,320
Size4.2 GB 2.1 GB
Events in quadrant A26,851,7568,707,966
Events in quadrant B24,933,5309,232,225
Events in quadrant C25,581,1287,989,528
Events in quadrant D21,531,5507,312,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06150
B06150
C06150
D06150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012213390
B012457150
C014069370
D016344390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108310
B0108350
C0108340
D0108370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A534194111432.085946%
B534218195263.655062%
C534149255794.788739%
D534135475128.895130%

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 602467 534533 0 0 0.00% 0.00%
B 602467 534510 0 0 0.00% 0.00%
C 602467 533898 0 0 0.00% 0.00%
D 602467 532850 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 14 188 29420 9.66 7052 6480 2375.1
A 9 255 26771 8.54 7052 6480 2375.1
A 14 204 23720 7.26 7052 6480 2375.1
B 3 25 20854 9.48 6589 6209 1544.7
B 3 17 19410 8.55 6589 6209 1544.7
B 9 173 19321 8.49 6589 6209 1544.7
C 15 175 20715 6.14 6826 6172 2366.6
C 15 127 20333 5.98 6826 6172 2366.6
C 2 31 19579 5.66 6826 6172 2366.6
D 6 218 26717 10.33 6163 5473 2055.9
D 15 11 20381 7.25 6163 5473 2055.9
D 3 30 20363 7.24 6163 5473 2055.9

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