ASTROSAT CZTI

Data Quality Report

Orbit 53217

Creation date: 2025-07-31T15:40:17.129064
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_9000006490_53217cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53217cztM0_level2_quad_clean.evt
Size (bytes)2,356,318,080197,775,360
Size2.2 GB 188.6 MB
Events in quadrant A11,137,3131,554,661
Events in quadrant B9,470,9281,729,181
Events in quadrant C31,493,010721,543
Events in quadrant D33,762,149764,872

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0462072
B0407802
C01056712
D01124772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1765010295.830028%
B176513391.920571%
C17651971655.045040%
D17651896350.778993%

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 17960 17652 702 702 3.91% 3.98%
B 17961 17653 147 147 0.82% 0.83%
C 17961 17651 8446 8446 47.02% 47.85%
D 17961 17653 8987 8987 50.04% 50.91%

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 0 8 1440102 3232.94 1794 1747 444.9
A 7 206 1144499 2568.52 1794 1747 444.9
A 3 62 466881 1045.47 1794 1747 444.9
B 10 28 696375 1822.29 1803 1738 381.2
B 4 81 345254 901.17 1803 1738 381.2
B 10 247 197147 512.63 1803 1738 381.2
C 1 241 12238537 35939.21 1234 1221 340.5
C 15 198 6047726 17757.7 1234 1221 340.5
C 15 224 3303107 9697.16 1234 1221 340.5
D 15 125 21764906 53203.87 1411 1343 409.1
D 11 176 1949007 4761.32 1411 1343 409.1
D 3 12 1180593 2882.83 1411 1343 409.1

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