ASTROSAT CZTI

Data Quality Report

Orbit 55431

Creation date: 2025-12-26T21:39:14.362132
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_099T01_9000006536_55431cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55431cztM0_level2_quad_clean.evt
Size (bytes)478,647,36094,631,040
Size456.5 MB 90.2 MB
Events in quadrant A3,056,125639,374
Events in quadrant B3,112,332682,759
Events in quadrant C3,126,112603,985
Events in quadrant D7,927,429494,578

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137351
B0139511
C0139981
D0279454

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63771642.571742%
B63771462.289478%
C63771081.693586%
D6376122019.134253%

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 7527 6378 64 64 0.85% 1.00%
B 7527 6378 36 36 0.48% 0.56%
C 7527 6378 49 49 0.65% 0.77%
D 7526 6377 1104 1104 14.67% 17.31%

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 15 32 234004 1368.79 692 677 170.5
A 0 8 54728 317.09 692 677 170.5
A 7 173 18138 102.43 692 677 170.5
B 5 185 172391 1187.49 681 658 144.6
B 9 254 69309 474.7 681 658 144.6
B 10 247 42973 292.6 681 658 144.6
C 13 3 181289 980.51 673 664 184.2
C 12 250 109178 589.06 673 664 184.2
C 9 237 64476 346.4 673 664 184.2
D 11 129 4765677 26566.74 638 608 179.4
D 8 160 172910 960.64 638 608 179.4
D 8 48 140370 779.22 638 608 179.4

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