ASTROSAT CZTI

Data Quality Report

Orbit 52004

Creation date: 2025-05-10T04:50:18.680923
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_011T06_9000006468_52004cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52004cztM0_level2_quad_clean.evt
Size (bytes)799,519,68086,745,600
Size762.5 MB 82.7 MB
Events in quadrant A6,591,949550,283
Events in quadrant B7,014,840605,874
Events in quadrant C6,728,773561,423
Events in quadrant D8,758,190454,665

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242032
B0254202
C0244613
D0306072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499102315.740883%
B6500106716.415385%
C649994214.494538%
D6499159024.465302%

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 7633 6499 799 799 10.47% 12.29%
B 7634 6499 635 635 8.32% 9.77%
C 7634 6499 860 860 11.27% 13.23%
D 7634 6500 1525 1525 19.98% 23.46%

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 64 1810785 11189.16 639 623 161.8
A 2 48 595743 3678.62 639 623 161.8
A 3 14 583793 3604.75 639 623 161.8
B 7 0 2438169 17774.88 655 634 137.1
B 4 206 400969 2919.3 655 634 137.1
B 4 171 318754 2319.78 655 634 137.1
C 15 224 3251084 18064.68 649 643 179.9
C 9 38 265276 1470.73 649 643 179.9
C 12 252 192487 1066.19 649 643 179.9
D 6 42 1661131 9541.01 598 567 174.0
D 13 170 1322984 7598.14 598 567 174.0
D 8 176 1319626 7578.84 598 567 174.0

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