ASTROSAT CZTI

Data Quality Report

Orbit 10237

Creation date: 2024-06-27T15:56:49.234840
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/AS1A03_095T03_9000001474_10237cztM0_level2.evt modeM0/AS1A03_095T03_9000001474_10237cztM0_level2_quad_clean.evt
Size (bytes)533,232,000106,643,520
Size508.5 MB 101.7 MB
Events in quadrant A3,804,549685,354
Events in quadrant B3,838,519688,363
Events in quadrant C3,288,115684,724
Events in quadrant D4,710,747651,314

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167793
B0163732
C0152512
D0190622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7470670.896921%
B7470801.070950%
C7470130.174029%
D74701411.887550%

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 7740 7471 4 4 0.05% 0.05%
B 7740 7471 36 36 0.47% 0.48%
C 7740 7471 0 0 0.00% 0.00%
D 7740 7471 98 98 1.27% 1.31%

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 8 15 414379 2322.79 873 857 178.0
A 15 174 13833 72.89 873 857 178.0
A 15 223 12483 65.3 873 857 178.0
B 4 239 163432 970.94 874 852 167.4
B 11 51 89330 528.4 874 852 167.4
B 0 214 66086 389.58 874 852 167.4
C 13 61 6352 28.28 839 842 194.8
C 14 234 6237 27.69 839 842 194.8
C 0 207 4978 21.23 839 842 194.8
D 1 52 564713 2810.34 833 807 200.7
D 8 195 434201 2159.91 833 807 200.7
D 13 104 199122 988.34 833 807 200.7

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