ASTROSAT CZTI

Data Quality Report

Orbit 01797

Creation date: 2024-06-27T14:12:50.441029
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/AS1G02_020T01_9000000296_01797cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01797cztM0_level2_quad_clean.evt
Size (bytes)1,134,875,52097,974,720
Size1.1 GB 93.4 MB
Events in quadrant A8,665,809630,087
Events in quadrant B8,718,299635,526
Events in quadrant C8,059,486615,496
Events in quadrant D8,469,049605,045

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03066813
B0308112
C0288062
D0300512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6902761.101130%
B6904300.434531%
C6904230.333140%
D6904961.390498%

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 7694 6904 354 354 4.60% 5.13%
B 7694 6905 358 358 4.65% 5.18%
C 7694 6905 247 247 3.21% 3.58%
D 7694 6905 389 389 5.06% 5.63%

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 0 231 110279 199.03 2237 2255 542.8
A 10 2 5501 5.98 2237 2255 542.8
A -1 -1 -1 -1.0 2237 2255 542.8
B 15 85 26959 45.57 2284 2297 541.2
B 0 234 21464 35.42 2284 2297 541.2
B 3 32 10355 14.89 2284 2297 541.2
C 8 208 68726 116.47 2042 2110 572.0
C 10 82 9271 12.52 2042 2110 572.0
C 14 223 7675 9.73 2042 2110 572.0
D 7 85 341362 536.28 2039 2112 632.6
D 10 172 140053 218.06 2039 2112 632.6
D 13 88 117404 182.25 2039 2112 632.6

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