ASTROSAT CZTI

Data Quality Report

Orbit 54244

Creation date: 2025-10-08T01:13:41.085235
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/AS1C09_004T08_9000006514_54244cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54244cztM0_level2_quad_clean.evt
Size (bytes)1,005,975,36081,835,200
Size959.4 MB 78.0 MB
Events in quadrant A4,891,687642,532
Events in quadrant B7,607,061677,002
Events in quadrant C12,589,733306,355
Events in quadrant D11,592,773349,776

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199170
B0277290
C0423910
D0394480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72055437.536433%
B720584211.686329%
C7205394154.698126%
D7205326645.329632%

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 7205 7205 355 355 4.93% 4.93%
B 7205 7205 539 539 7.48% 7.48%
C 7205 7205 3590 3590 49.83% 49.83%
D 7204 7204 2656 2656 36.87% 36.87%

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 7 29 1153496 6340.22 737 718 181.8
A 13 248 423927 2327.63 737 718 181.8
A 15 174 200649 1099.61 737 718 181.8
B 5 172 2718798 17414.5 732 707 156.1
B 7 0 1265102 8100.83 732 707 156.1
B 4 171 231095 1476.07 732 707 156.1
C 1 241 9530396 63016.38 551 545 151.2
C 1 29 284338 1876.59 551 545 151.2
C 12 2 275307 1816.87 551 545 151.2
D 8 176 7711799 51171.24 530 506 150.7
D 2 62 912753 6053.57 530 506 150.7
D 3 12 358344 2374.57 530 506 150.7

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