ASTROSAT CZTI

Data Quality Report

Orbit 38148

Creation date: 2024-06-27T21:49:00.313584
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/AS1A07_093T02_9000005368_38148cztM0_level2.fits modeM0/AS1A07_093T02_9000005368_38148cztM0_level2_quad_clean.evt
Size (bytes)667,226,880187,701,120
Size636.3 MB 179.0 MB
Events in quadrant A5,690,7681,271,986
Events in quadrant B5,194,0361,288,885
Events in quadrant C5,376,8831,236,067
Events in quadrant D7,570,7661,113,295

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234024
B0230423
C0227323
D0301633

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11168120.107450%
B11168350.313395%
C1116890.080587%
D111682892.587751%

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 16066 11171 6 6 0.04% 0.05%
B 16066 11171 19 19 0.12% 0.17%
C 16066 11171 9 9 0.06% 0.08%
D 16066 11171 273 273 1.70% 2.44%

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 10 83 704217 2789.12 1244 1218 252.1
A 12 189 86851 339.74 1244 1218 252.1
A 12 16 54178 210.12 1244 1218 252.1
B 4 171 113115 477.14 1233 1200 234.6
B 0 229 70940 297.33 1233 1200 234.6
B 5 172 35471 146.11 1233 1200 234.6
C 15 214 466841 1673.05 1210 1216 278.3
C 3 233 107492 381.86 1210 1216 278.3
C 0 239 47582 166.6 1210 1216 278.3
D 12 235 1258799 4394.27 1197 1166 286.2
D 1 47 357723 1245.84 1197 1166 286.2
D 13 249 317466 1105.18 1197 1166 286.2

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