ASTROSAT CZTI

Data Quality Report

Orbit 35974

Creation date: 2022-07-18T23:06:13.298410
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/AS1A11_050T19_9000005156_35974cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35974cztM0_level2_quad_clean.evt
Size (bytes)980,982,72082,350,720
Size935.5 MB 78.5 MB
Events in quadrant A2,549,790684,616
Events in quadrant B13,824,342231,703
Events in quadrant C6,791,256584,725
Events in quadrant D6,184,227614,433

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109432
B0447331
C0237491
D0221951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A535360.112087%
B5353527298.486830%
C5353135225.256865%
D535366512.422940%

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 7295 5354 0 0 0.00% 0.00%
B 7294 5352 5077 5077 69.61% 94.86%
C 7295 5354 1229 1229 16.85% 22.95%
D 7295 5354 711 711 9.75% 13.28%

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 146727 1188.27 610 598 123.0
A 15 169 29304 233.42 610 598 123.0
A 13 254 8741 66.21 610 598 123.0
B 5 31 6782272 142873.28 242 236 47.5
B 5 15 4589913 96688.11 242 236 47.5
B 5 14 861938 18152.98 242 236 47.5
C 9 187 4460633 37063.89 522 525 120.3
C 15 214 202280 1676.6 522 525 120.3
C 0 10 91894 759.28 522 525 120.3
D 1 52 2316814 16423.23 571 553 141.0
D 10 118 567957 4023.12 571 553 141.0
D 8 195 460551 3261.57 571 553 141.0

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