ASTROSAT CZTI

Data Quality Report

Orbit 36522

Creation date: 2024-06-27T21:27:53.834642
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/AS1T05_035T01_9000005214_36522cztM0_level2.evt modeM0/AS1T05_035T01_9000005214_36522cztM0_level2_quad_clean.evt
Size (bytes)199,517,76031,420,800
Size190.3 MB 30.0 MB
Events in quadrant A1,224,192203,812
Events in quadrant B1,249,865207,878
Events in quadrant C1,329,631201,277
Events in quadrant D2,093,782185,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048651
B048911
C052701
D075961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2103130.618165%
B2103110.523062%
C2103472.234903%
D210330414.455540%

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 2103 2103 3 3 0.14% 0.14%
B 2103 2103 5 5 0.24% 0.24%
C 2103 2103 27 27 1.28% 1.28%
D 2103 2103 260 260 12.36% 12.36%

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 88664 1539.95 285 281 57.4
A 9 143 27937 481.87 285 281 57.4
A 10 255 4288 69.82 285 281 57.4
B 5 172 47258 866.16 280 273 54.2
B 0 189 37059 678.14 280 273 54.2
B 15 85 29033 530.18 280 273 54.2
C 0 10 173448 2731.73 272 275 63.4
C 15 214 91780 1443.45 272 275 63.4
C 13 61 1782 23.77 272 275 63.4
D 2 250 589959 9020.07 266 260 65.4
D 2 137 95285 1453.51 266 260 65.4
D 2 153 86172 1314.12 266 260 65.4

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