ASTROSAT CZTI

Data Quality Report

Orbit 54965

Creation date: 2025-11-25T12:43:26.095980
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_014T01_9000006528_54965cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54965cztM0_level2_quad_clean.evt
Size (bytes)728,138,88074,802,240
Size694.4 MB 71.3 MB
Events in quadrant A4,990,546543,331
Events in quadrant B2,651,049651,229
Events in quadrant C3,123,163570,088
Events in quadrant D15,704,75866,109

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191711
B0127521
C0140051
D0509661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A622168410.995017%
B6222370.594664%
C62221061.703632%
D6222556989.504982%

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 7311 6222 606 606 8.29% 9.74%
B 7312 6223 3 3 0.04% 0.05%
C 7312 6223 78 78 1.07% 1.25%
D 7312 6222 5551 5551 75.92% 89.22%

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 15 32 2021638 12880.79 628 612 156.9
A 0 8 305245 1941.55 628 612 156.9
A 3 14 86310 546.19 628 612 156.9
B 4 141 34206 236.35 655 633 142.0
B 12 111 17070 115.72 655 633 142.0
B 11 111 15913 107.57 655 633 142.0
C 14 254 161058 915.81 637 632 175.2
C 4 5 134835 766.11 637 632 175.2
C 15 199 122969 698.37 637 632 175.2
D 15 94 13772544 165541.39 285 272 83.2
D 3 12 297963 3578.21 285 272 83.2
D 2 249 244568 2936.41 285 272 83.2

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