ASTROSAT CZTI

Data Quality Report

Orbit 54548

Creation date: 2025-10-28T12:07:33.894254
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_54548cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54548cztM0_level2_quad_clean.evt
Size (bytes)464,993,280110,623,680
Size443.5 MB 105.5 MB
Events in quadrant A3,516,605731,747
Events in quadrant B3,642,775777,928
Events in quadrant C4,903,655671,897
Events in quadrant D4,555,593637,164

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162472
B0165832
C0201992
D0191963

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7636590.772656%
B76361221.597695%
C76373384.425822%
D76362413.156103%

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 9277 7638 22 22 0.24% 0.29%
B 9277 7637 27 27 0.29% 0.35%
C 9278 7639 287 287 3.09% 3.76%
D 9277 7638 236 236 2.54% 3.09%

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 11 3 150105 718.65 834 813 207.7
A 4 3 37370 175.97 834 813 207.7
A 3 14 25368 118.2 834 813 207.7
B 8 234 109168 606.89 827 797 178.6
B 0 213 94318 523.73 827 797 178.6
B 10 247 53514 295.22 827 797 178.6
C 12 254 965347 4402.11 799 792 219.1
C 13 3 195334 887.86 799 792 219.1
C 1 45 182407 828.87 799 792 219.1
D 10 181 475472 2098.66 795 760 226.2
D 8 160 310134 1367.72 795 760 226.2
D 6 239 287517 1267.73 795 760 226.2

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