ASTROSAT CZTI

Data Quality Report

Orbit 54354

Creation date: 2025-10-15T11:10:47.463992
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_126T15_9000006516_54354cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54354cztM0_level2_quad_clean.evt
Size (bytes)502,876,800101,479,680
Size479.6 MB 96.8 MB
Events in quadrant A3,295,893682,923
Events in quadrant B3,524,244728,129
Events in quadrant C4,075,574639,545
Events in quadrant D7,169,432529,611

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151031
B0155841
C0174211
D0262721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7075310.438163%
B7075711.003534%
C70762012.840588%
D7076107015.121538%

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 9105 7076 4 4 0.04% 0.06%
B 9105 7076 34 34 0.37% 0.48%
C 9106 7078 186 186 2.04% 2.63%
D 9106 7078 1093 1093 12.00% 15.44%

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 7 206 312299 1673.76 749 731 186.1
A 15 174 24070 125.38 749 731 186.1
A 4 3 18645 96.24 749 731 186.1
B 0 213 253444 1590.6 743 715 158.9
B 0 171 100225 626.29 743 715 158.9
B 10 245 71467 445.29 743 715 158.9
C 1 241 333478 1669.26 724 716 199.3
C 12 252 313460 1568.84 724 716 199.3
C 13 3 213687 1068.34 724 716 199.3
D 8 176 3482709 17989.45 674 644 193.6
D 2 252 224214 1155.03 674 644 193.6
D 5 113 217646 1121.1 674 644 193.6

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