ASTROSAT CZTI

Data Quality Report

Orbit 53573

Creation date: 2025-08-23T20:23:00.716030
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_004T05_9000006502_53573cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53573cztM0_level2_quad_clean.evt
Size (bytes)841,262,40093,816,000
Size802.3 MB 89.5 MB
Events in quadrant A7,275,772596,935
Events in quadrant B4,948,248711,675
Events in quadrant C9,056,526470,791
Events in quadrant D9,334,808586,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263212
B0192192
C0314812
D0324872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6810127118.663730%
B68105007.342144%
C6810227133.348018%
D681072510.646109%

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 7920 6811 820 820 10.35% 12.04%
B 7920 6811 277 277 3.50% 4.07%
C 7919 6810 1864 1864 23.54% 27.37%
D 7920 6811 724 724 9.14% 10.63%

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 63 1833941 10248.9 721 703 178.9
A 3 62 1320621 7379.13 721 703 178.9
A 15 174 828693 4628.96 721 703 178.9
B 2 249 665479 4170.98 749 724 159.4
B 10 28 355689 2227.21 749 724 159.4
B 5 185 291369 1823.64 749 724 159.4
C 15 224 2592578 14902.29 629 623 173.9
C 1 241 2171470 12481.16 629 623 173.9
C 15 178 1229516 7065.45 629 623 173.9
D 2 172 5706589 26867.49 740 705 212.4
D 11 176 189659 889.73 740 705 212.4
D 12 1 60192 280.11 740 705 212.4

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