ASTROSAT CZTI

Data Quality Report

Orbit 56128

Creation date: 2026-02-11T22:18:31.520969
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_083T03_9000006548_56128cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56128cztM0_level2_quad_clean.evt
Size (bytes)623,315,52096,851,520
Size594.4 MB 92.4 MB
Events in quadrant A4,001,914660,902
Events in quadrant B3,872,444730,012
Events in quadrant C10,617,143457,787
Events in quadrant D4,054,226610,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165392
B0160542
C0362918
D0168592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67973314.869795%
B67972313.398558%
C6796247636.433196%
D67961842.707475%

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 7942 6797 216 216 2.72% 3.18%
B 7942 6798 129 129 1.62% 1.90%
C 7941 6796 1705 1705 21.47% 25.09%
D 7941 6797 104 104 1.31% 1.53%

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 8 237 327085 1785.23 744 725 182.8
A 8 253 215494 1174.81 744 725 182.8
A 0 8 126656 688.86 744 725 182.8
B 4 171 305521 1923.36 745 718 158.5
B 5 185 226825 1426.77 745 718 158.5
B 0 213 114462 717.74 745 718 158.5
C 9 38 5429181 33359.81 589 582 162.7
C 15 147 1911593 11743.54 589 582 162.7
C 15 148 468779 2877.16 589 582 162.7
D 2 31 330639 1608.17 732 699 205.2
D 2 120 313987 1527.01 732 699 205.2
D 2 249 116909 566.42 732 699 205.2

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