ASTROSAT CZTI

Data Quality Report

Orbit 54445

Creation date: 2025-10-21T13:00:00.656719
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_126T19_9000006518_54445cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54445cztM0_level2_quad_clean.evt
Size (bytes)535,345,92084,461,760
Size510.5 MB 80.5 MB
Events in quadrant A2,562,698583,599
Events in quadrant B2,827,104625,484
Events in quadrant C5,562,102556,929
Events in quadrant D8,388,071362,641

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125781
B0132481
C0210161
D0291991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6142380.618691%
B6142701.139694%
C6142971.579290%
D6142191631.195050%

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 7167 6144 1 1 0.01% 0.02%
B 7167 6144 11 11 0.15% 0.18%
C 7167 6144 61 61 0.85% 0.99%
D 7167 6143 1669 1669 23.29% 27.17%

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 21361 130.16 644 628 159.3
A 4 3 19960 121.36 644 628 159.3
A 13 254 13759 82.43 644 628 159.3
B 5 185 186870 1365.25 635 612 136.4
B 0 213 37352 269.3 635 612 136.4
B 10 247 32146 231.14 635 612 136.4
C 4 5 2818713 16651.87 615 610 169.2
C 13 3 130612 768.17 615 610 169.2
C 14 254 87711 514.67 615 610 169.2
D 7 70 3733224 24890.41 522 499 150.0
D 6 239 873166 5819.08 522 499 150.0
D 8 176 493704 3288.77 522 499 150.0

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