ASTROSAT CZTI

Data Quality Report

Orbit 53803

Creation date: 2025-09-08T07:16:58.428745
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_022T04_9000006506_53803cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53803cztM0_level2_quad_clean.evt
Size (bytes)917,087,04076,625,280
Size874.6 MB 73.1 MB
Events in quadrant A16,612,43968,252
Events in quadrant B3,666,758698,498
Events in quadrant C5,976,942585,521
Events in quadrant D7,171,935499,824

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540062
B0158022
C0224372
D0260392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6710610390.953800%
B67111602.384145%
C67106389.508197%
D6710127118.941878%

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 7855 6711 5955 5955 75.81% 88.73%
B 7856 6712 67 67 0.85% 1.00%
C 7855 6711 495 495 6.30% 7.38%
D 7855 6711 1030 1030 13.11% 15.35%

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 14806289 154320.26 380 372 95.9
A 5 241 74215 769.66 380 372 95.9
A 8 249 59341 614.63 380 372 95.9
B 5 185 453507 2992.79 712 686 151.3
B 8 234 188429 1240.83 712 686 151.3
B 0 213 110378 724.98 712 686 151.3
C 15 224 2748559 14715.99 679 675 186.7
C 12 2 111162 591.7 679 675 186.7
C 12 249 102858 547.23 679 675 186.7
D 8 176 2063083 11651.87 622 595 177.0
D 1 241 990491 5592.34 622 595 177.0
D 7 70 343882 1939.37 622 595 177.0

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