ASTROSAT CZTI

Data Quality Report

Orbit 36966

Creation date: 2024-06-27T21:33:41.619140
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_001T10_9000005252_36966cztM0_level2.evt modeM0/AS1C07_001T10_9000005252_36966cztM0_level2_quad_clean.evt
Size (bytes)523,477,44095,702,400
Size499.2 MB 91.3 MB
Events in quadrant A2,737,522668,781
Events in quadrant B5,241,399614,424
Events in quadrant C2,857,651649,108
Events in quadrant D4,661,425597,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115032
B0191571
C0117331
D0173631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524490.171625%
B524478715.007628%
C5244460.877193%
D52445219.935164%

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 6946 5245 0 0 0.00% 0.00%
B 6946 5245 623 623 8.97% 11.88%
C 6946 5245 33 33 0.48% 0.63%
D 6946 5245 475 475 6.84% 9.06%

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 205524 1701.53 593 580 120.4
A 12 189 180441 1493.28 593 580 120.4
A 13 6 20195 162.85 593 580 120.4
B 5 184 1933634 18419.42 555 541 104.9
B 4 171 449421 4277.14 555 541 104.9
B 5 172 241644 2297.34 555 541 104.9
C 15 214 226939 1699.23 575 579 133.2
C 14 254 133526 998.0 575 579 133.2
C 0 10 100033 746.58 575 579 133.2
D 12 17 1212677 9037.58 556 540 134.1
D 2 250 446010 3321.38 556 540 134.1
D 1 52 278852 2075.07 556 540 134.1

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