ASTROSAT CZTI

Data Quality Report

Orbit 08154

Creation date: 2024-06-27T15:28:46.606279
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/AS1G06_028T01_9000001122_08154cztM0_level2.evt modeM0/AS1G06_028T01_9000001122_08154cztM0_level2_quad_clean.evt
Size (bytes)96,744,96010,203,840
Size92.3 MB 9.7 MB
Events in quadrant A663,26555,156
Events in quadrant B692,90956,023
Events in quadrant C688,38456,236
Events in quadrant D803,49052,781

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026941
B027661
C027571
D031721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1160494.224138%
B1160695.948276%
C1160443.793103%
D1160322.758621%

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 1355 1161 0 0 0.00% 0.00%
B 1355 1161 0 0 0.00% 0.00%
C 1355 1161 0 0 0.00% 0.00%
D 1355 1161 5 5 0.37% 0.43%

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 13 254 1914 46.36 171 167 37.7
A 0 226 1653 39.44 171 167 37.7
A 12 194 1522 35.96 171 167 37.7
B 0 219 9701 263.87 174 170 36.1
B 0 184 3588 94.63 174 170 36.1
B 12 111 3082 80.62 174 170 36.1
C 1 16 29192 696.96 168 168 41.6
C 13 61 1332 27.95 168 168 41.6
C 7 159 584 9.99 168 168 41.6
D 2 152 62410 1415.34 167 161 44.0
D 13 29 61050 1384.42 167 161 44.0
D 2 136 21225 478.93 167 161 44.0

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