ASTROSAT CZTI

Data Quality Report

Orbit 54558

Creation date: 2025-10-29T03:30:20.799301
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_127T09_9000006520_54558cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54558cztM0_level2_quad_clean.evt
Size (bytes)636,330,24090,875,520
Size606.9 MB 86.7 MB
Events in quadrant A5,794,847603,228
Events in quadrant B7,223,870559,999
Events in quadrant C6,425,718545,486
Events in quadrant D3,601,589585,084

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217852
B0258802
C0237102
D0155152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A655876711.695639%
B6558159324.290942%
C6558109616.712412%
D65581492.272034%

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 7643 6559 542 542 7.09% 8.26%
B 7643 6559 1306 1306 17.09% 19.91%
C 7643 6559 901 901 11.79% 13.74%
D 7643 6559 51 51 0.67% 0.78%

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 14 2482941 14043.51 715 695 176.8
A 11 3 372270 2102.22 715 695 176.8
A 4 3 95631 537.11 715 695 176.8
B 5 185 2140188 15085.51 664 641 141.8
B 8 234 1716474 12097.99 664 641 141.8
B 1 207 325359 2289.52 664 641 141.8
C 12 254 3050708 16067.19 687 682 189.8
C 1 45 217211 1140.65 687 682 189.8
C 12 249 129377 677.95 687 682 189.8
D 1 3 390160 1881.5 728 695 207.0
D 15 122 72675 347.73 728 695 207.0
D 5 173 56932 271.68 728 695 207.0

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