ASTROSAT CZTI

Data Quality Report

Orbit 35221

Creation date: 2022-04-03T22:08:49.498441
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/AS1C07_004T01_9000005052_35221cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35221cztM0_level2_quad_clean.evt
Size (bytes)789,264,00072,216,000
Size752.7 MB 68.9 MB
Events in quadrant A2,583,710515,572
Events in quadrant B8,744,905369,043
Events in quadrant C3,060,453496,851
Events in quadrant D9,156,362431,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110653
B0296452
C0123132
D0308762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A531370.131752%
B5313254947.976661%
C53131422.672690%
D5313127624.016563%

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 7286 5314 0 0 0.00% 0.00%
B 7286 5314 1924 1924 26.41% 36.21%
C 7286 5314 114 114 1.56% 2.15%
D 7286 5314 1810 1810 24.84% 34.06%

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 104409 820.83 626 615 126.4
A 13 6 20064 153.81 626 615 126.4
A 9 143 16582 126.27 626 615 126.4
B 5 236 5240858 56094.23 492 480 93.4
B 5 172 1341064 14349.92 492 480 93.4
B 4 232 162396 1733.19 492 480 93.4
C 0 10 383017 2808.72 589 596 136.2
C 15 214 218488 1600.32 589 596 136.2
C 0 207 53412 387.91 589 596 136.2
D 8 195 6068459 43048.58 575 559 141.0
D 1 47 259786 1839.08 575 559 141.0
D 10 118 211417 1495.92 575 559 141.0

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