ASTROSAT CZTI

Data Quality Report

Orbit 12575

Creation date: 2024-06-27T16:29:27.787557
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/AS1A04_085T01_9000001868_12575cztM0_level2.evt modeM0/AS1A04_085T01_9000001868_12575cztM0_level2_quad_clean.evt
Size (bytes)440,922,24093,188,160
Size420.5 MB 88.9 MB
Events in quadrant A3,094,454593,044
Events in quadrant B3,254,058614,527
Events in quadrant C3,197,854595,339
Events in quadrant D3,370,076570,915

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135963
B0140192
C0139082
D0143412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6421410.638530%
B6421661.027877%
C6421550.856564%
D6421651.012303%

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 7577 6422 0 0 0.00% 0.00%
B 7577 6422 3 3 0.04% 0.05%
C 7577 6422 20 20 0.26% 0.31%
D 7577 6422 25 25 0.33% 0.39%

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 12 189 19637 117.52 793 778 160.5
A 12 96 12521 73.18 793 778 160.5
A 0 226 6992 38.72 793 778 160.5
B 3 64 47627 308.84 805 785 151.7
B 3 209 36562 235.89 805 785 151.7
B 12 111 16937 106.49 805 785 151.7
C 15 208 115634 636.07 782 787 180.6
C 14 234 28193 151.78 782 787 180.6
C 13 61 5851 28.05 782 787 180.6
D 1 52 265440 1434.2 777 753 184.6
D 10 157 49392 263.55 777 753 184.6
D 13 249 32746 173.35 777 753 184.6

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