ASTROSAT CZTI

Data Quality Report

Orbit 52613

Creation date: 2025-06-20T11:04:25.249614
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/AS1C09_011T06_9000006478_52613cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52613cztM0_level2_quad_clean.evt
Size (bytes)950,120,64065,603,520
Size906.1 MB 62.6 MB
Events in quadrant A3,037,909593,065
Events in quadrant B12,203,157280,838
Events in quadrant C11,583,572245,138
Events in quadrant D7,879,771444,836

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132681
B0403762
C0385611
D0276331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6041460.761463%
B6040381263.112583%
C6041352458.334713%
D6041121220.062903%

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 7251 6042 28 28 0.39% 0.46%
B 7250 6041 3270 3270 45.10% 54.13%
C 7250 6040 3175 3175 43.79% 52.57%
D 7251 6042 1233 1233 17.00% 20.41%

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 4 249 126211 791.85 629 614 158.6
A 7 243 118874 745.59 629 614 158.6
A 3 14 67017 418.65 629 614 158.6
B 10 128 7568810 73745.11 484 467 102.6
B 10 254 1933535 18835.61 484 467 102.6
B 8 234 171541 1666.93 484 467 102.6
C 15 248 9781262 99530.84 350 348 98.3
C 13 3 214603 2180.26 350 348 98.3
C 2 12 57830 584.94 350 348 98.3
D 2 62 1823868 10986.35 570 543 166.0
D 12 2 787718 4743.08 570 543 166.0
D 11 176 628297 3782.5 570 543 166.0

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