ASTROSAT CZTI

Data Quality Report

Orbit 54979

Creation date: 2025-11-26T11:15:42.114025
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_014T01_9000006528_54979cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54979cztM0_level2_quad_clean.evt
Size (bytes)744,160,32086,762,880
Size709.7 MB 82.7 MB
Events in quadrant A4,833,451607,611
Events in quadrant B3,020,230703,703
Events in quadrant C4,724,529582,523
Events in quadrant D14,446,577264,089

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191752
B0141352
C0189102
D0475433

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67305187.696880%
B6730370.549777%
C67315117.591740%
D6730384157.072808%

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 7850 6731 433 433 5.52% 6.43%
B 7850 6731 19 19 0.24% 0.28%
C 7851 6732 446 446 5.68% 6.63%
D 7850 6731 4158 4158 52.97% 61.77%

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 15 32 1939214 11288.52 690 675 171.7
A 13 248 78918 455.63 690 675 171.7
A 0 8 42680 244.6 690 675 171.7
B 10 245 101886 665.07 709 685 152.2
B 5 185 33145 213.32 709 685 152.2
B 10 14 26323 168.49 709 685 152.2
C 4 5 847284 4585.01 669 665 184.6
C 13 3 825100 4464.86 669 665 184.6
C 14 254 138081 744.2 669 665 184.6
D 15 94 11532195 80867.12 497 474 142.6
D 1 31 284001 1988.25 497 474 142.6
D 11 129 124683 871.02 497 474 142.6

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