ASTROSAT CZTI

Data Quality Report

Orbit 54589

Creation date: 2025-10-31T12:25:21.883304
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_127T09_9000006520_54589cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54589cztM0_level2_quad_clean.evt
Size (bytes)484,934,40096,514,560
Size462.5 MB 92.0 MB
Events in quadrant A5,134,507635,513
Events in quadrant B3,664,155682,388
Events in quadrant C4,106,729585,530
Events in quadrant D4,543,501568,185

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198714
B0154562
C0167142
D0180112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64603285.077399%
B64602553.947368%
C64604486.934985%
D64602894.473684%

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 7615 6461 201 201 2.64% 3.11%
B 7615 6461 118 118 1.55% 1.83%
C 7615 6461 379 379 4.98% 5.87%
D 7614 6460 244 244 3.20% 3.78%

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 14 1542549 8641.9 716 697 178.4
A 11 3 472639 2645.18 716 697 178.4
A 13 248 137936 769.21 716 697 178.4
B 6 255 368025 2411.4 718 695 152.3
B 10 14 126417 825.32 718 695 152.3
B 10 247 104973 684.55 718 695 152.3
C 4 5 1206110 6296.52 698 692 191.4
C 12 249 26041 132.41 698 692 191.4
C 7 220 24891 126.4 698 692 191.4
D 3 12 699615 3529.7 698 668 198.0
D 15 94 420592 2120.63 698 668 198.0
D 2 172 378463 1907.88 698 668 198.0

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