ASTROSAT CZTI

Data Quality Report

Orbit 58954

Creation date: 2026-08-21T10:21:04.129930
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_004T07_9000006598_58954cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58954cztM0_level2_quad_clean.evt
Size (bytes)792,829,44095,489,280
Size756.1 MB 91.1 MB
Events in quadrant A4,490,396711,846
Events in quadrant B8,965,418540,078
Events in quadrant C3,862,132686,793
Events in quadrant D11,454,929435,675

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185460
B0318210
C0166650
D0391807

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74222233.004581%
B7423238232.089452%
C7423831.118146%
D7422279937.712207%

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 7422 7422 191 191 2.57% 2.57%
B 7423 7423 1856 1856 25.00% 25.00%
C 7423 7423 85 85 1.15% 1.15%
D 7422 7422 2598 2598 35.00% 35.00%

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 14 238 1092457 5333.48 825 804 204.7
A 0 24 51142 245.94 825 804 204.7
A 15 233 39091 187.06 825 804 204.7
B 6 255 3701742 25250.78 678 654 146.6
B 2 249 1143960 7800.24 678 654 146.6
B 4 171 715660 4878.15 678 654 146.6
C 12 252 378968 1718.55 805 799 220.1
C 3 233 144628 653.62 805 799 220.1
C 4 5 38988 173.55 805 799 220.1
D 12 110 6718123 33681.25 699 667 199.4
D 11 129 1135122 5688.14 699 667 199.4
D 7 222 277797 1389.53 699 667 199.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct