ASTROSAT CZTI

Data Quality Report

Orbit 55416

Creation date: 2025-12-25T21:00:06.732129
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_55416cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55416cztM0_level2_quad_clean.evt
Size (bytes)549,204,48093,502,080
Size523.8 MB 89.2 MB
Events in quadrant A2,952,407672,213
Events in quadrant B3,056,454714,949
Events in quadrant C3,088,083629,916
Events in quadrant D10,719,492354,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136101
B0138911
C0141961
D0363902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6597661.000455%
B6597831.258148%
C6598610.924523%
D6597297045.020464%

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 7742 6598 5 5 0.06% 0.08%
B 7742 6598 8 8 0.10% 0.12%
C 7743 6599 18 18 0.23% 0.27%
D 7742 6597 2413 2413 31.17% 36.58%

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 29180 158.59 727 708 179.5
A 4 3 21772 117.33 727 708 179.5
A 12 3 21376 115.12 727 708 179.5
B 5 236 45148 293.64 711 686 151.4
B 10 247 36508 236.58 711 686 151.4
B 0 183 34193 221.29 711 686 151.4
C 12 252 167560 871.62 699 692 191.4
C 13 3 137999 717.21 699 692 191.4
C 1 241 14080 69.93 699 692 191.4
D 11 129 7930843 53430.32 522 499 148.4
D 2 249 148946 1000.15 522 499 148.4
D 2 31 126069 846.02 522 499 148.4

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