ASTROSAT CZTI

Data Quality Report

Orbit 56599

Creation date: 2026-03-15T11:56:39.560013
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_083T06_9000006558_56599cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56599cztM0_level2_quad_clean.evt
Size (bytes)514,344,960113,941,440
Size490.5 MB 108.7 MB
Events in quadrant A4,369,917743,150
Events in quadrant B4,617,232802,365
Events in quadrant C3,954,823708,048
Events in quadrant D5,464,734630,734

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191660
B0195440
C0179430
D0220550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81392172.666175%
B81402713.329238%
C81401291.584767%
D81404745.823096%

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 8139 8139 200 200 2.46% 2.46%
B 8140 8140 157 157 1.93% 1.93%
C 8140 8140 113 113 1.39% 1.39%
D 8140 8140 495 495 6.08% 6.08%

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 0 8 527758 2485.69 857 838 212.0
A 4 249 155554 729.86 857 838 212.0
A 4 13 91041 425.52 857 838 212.0
B 5 185 720475 3974.6 855 823 181.1
B 0 171 329320 1814.27 855 823 181.1
B 4 21 64851 353.62 855 823 181.1
C 15 230 200178 875.08 841 834 227.8
C 13 3 161639 705.9 841 834 227.8
C 12 252 118574 516.85 841 834 227.8
D 2 249 1012402 4415.69 818 778 229.1
D 6 239 557881 2431.73 818 778 229.1
D 2 31 158507 688.48 818 778 229.1

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