ASTROSAT CZTI

Data Quality Report

Orbit 06536

Creation date: 2024-06-27T15:08:29.784134
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/AS1G06_091T01_9000000880_06536cztM0_level2.evt modeM0/AS1G06_091T01_9000000880_06536cztM0_level2_quad_clean.evt
Size (bytes)1,365,641,280270,728,640
Size1.3 GB 258.2 MB
Events in quadrant A11,895,2141,700,178
Events in quadrant B9,951,3351,754,062
Events in quadrant C8,447,2241,750,077
Events in quadrant D9,767,9011,674,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500051323
B0436131084
C040303834
D0440211231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0201
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04008
B040010
C04004
D04004

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1914013386.990596%
B191526143.205931%
C191822801.459702%
D191415502.873413%

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 21543 19551 560 560 2.60% 2.86%
B 21543 19547 116 116 0.54% 0.59%
C 21541 19550 0 0 0.00% 0.00%
D 21543 19545 170 170 0.79% 0.87%

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 15 236 3514688 8081.44 2134 2083 434.7
A 8 15 85404 191.7 2134 2083 434.7
A 15 174 54665 120.98 2134 2083 434.7
B 4 170 456915 1084.83 2205 2146 419.2
B 0 219 252208 596.51 2205 2146 419.2
B 4 48 178630 420.99 2205 2146 419.2
C 1 16 53038 102.06 2150 2156 498.5
C 13 61 17233 30.24 2150 2156 498.5
C 12 4 7055 9.83 2150 2156 498.5
D 2 63 461040 880.56 2135 2069 521.2
D 2 33 411063 784.68 2135 2069 521.2
D 2 152 237039 450.8 2135 2069 521.2

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