ASTROSAT CZTI

Data Quality Report

Orbit 00577

Creation date: 2024-06-27T13:59:57.035406
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/AS1P01_014T01_9000000080_00577cztM0_level2.evt modeM0/AS1P01_014T01_9000000080_00577cztM0_level2_quad_clean.evt
Size (bytes)835,012,80071,449,920
Size796.3 MB 68.1 MB
Events in quadrant A7,967,369438,240
Events in quadrant B5,825,557467,450
Events in quadrant C5,366,984466,800
Events in quadrant D5,798,506442,736

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273113
B0208282
C0194712
D0207872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496678415.787354%
B496670.140959%
C4966130.261780%
D49661012.033830%

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 7122 4967 1181 1181 16.58% 23.78%
B 7122 4967 74 74 1.04% 1.49%
C 7122 4967 41 41 0.58% 0.83%
D 7122 4967 304 304 4.27% 6.12%

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 0 149 2320163 7445.16 1403 1391 311.4
A 0 69 135776 431.49 1403 1391 311.4
A 15 17 35204 108.57 1403 1391 311.4
B 4 206 48622 134.34 1490 1503 350.8
B 0 220 22608 60.17 1490 1503 350.8
B 8 4 19489 51.28 1490 1503 350.8
C 9 85 57878 153.93 1319 1363 367.1
C 7 255 42668 112.5 1319 1363 367.1
C 5 249 39083 102.74 1319 1363 367.1
D 1 4 636541 1613.37 1260 1306 393.7
D 13 221 86600 216.63 1260 1306 393.7
D 13 216 78783 196.78 1260 1306 393.7

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