ASTROSAT CZTI

Data Quality Report

Orbit 51984

Creation date: 2025-05-08T22:43:54.710763
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/AS1C09_011T06_9000006468_51984cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51984cztM0_level2_quad_clean.evt
Size (bytes)3,130,951,680221,734,080
Size2.9 GB 211.5 MB
Events in quadrant A20,678,3161,630,934
Events in quadrant B19,574,5621,853,724
Events in quadrant C26,742,1071,344,554
Events in quadrant D47,272,395422,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07588511
B0728384
C0942304
D01547864

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04320
B04320
C04320
D04320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21189364117.183444%
B21191307414.506158%
C21191647630.560143%
D211911663878.514464%

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 31809 21189 2746 2746 8.63% 12.96%
B 31811 21190 1820 1820 5.72% 8.59%
C 31811 21192 5563 5563 17.49% 26.25%
D 31810 21187 15688 15688 49.32% 74.05%

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 7 64 6818340 13169.9 2097 2046 517.6
A 4 95 2376479 4587.69 2097 2046 517.6
A 4 3 414685 797.27 2097 2046 517.6
B 12 32 3680203 8122.77 2120 2042 452.8
B 4 206 2197051 4847.41 2120 2042 452.8
B 10 128 1365558 3011.16 2120 2042 452.8
C 15 224 8059383 15515.89 1868 1847 519.3
C 12 252 7051320 13574.73 1868 1847 519.3
C 13 3 2159528 4154.91 1868 1847 519.3
D 2 172 24500514 71131.3 1195 1139 344.4
D 12 17 4127587 11980.7 1195 1139 344.4
D 7 126 3878964 11258.85 1195 1139 344.4

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