ASTROSAT CZTI

Data Quality Report

Orbit 06076

Creation date: 2024-06-27T15:02:35.955306
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_132T01_9000000784_06076cztM0_level2.evt modeM0/AS1G06_132T01_9000000784_06076cztM0_level2_quad_clean.evt
Size (bytes)1,324,468,800268,663,680
Size1.2 GB 256.2 MB
Events in quadrant A9,703,9651,690,102
Events in quadrant B10,060,7161,713,502
Events in quadrant C8,664,5261,715,445
Events in quadrant D10,320,7401,632,959

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043842903
B043704489
C041278440
D045915669

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04104
B04104
C04104
D04102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A200933441.712039%
B201353591.782965%
C201412061.022789%
D201055582.775429%

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 22261 20329 67 67 0.30% 0.33%
B 22261 20345 64 64 0.29% 0.31%
C 22261 20339 4 4 0.02% 0.02%
D 22261 20321 189 189 0.85% 0.93%

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 31 715400 1552.89 2262 2211 459.3
A 8 15 90326 191.86 2262 2211 459.3
A 14 111 59907 125.63 2262 2211 459.3
B 3 64 407165 926.67 2286 2229 437.0
B 0 214 241206 546.89 2286 2229 437.0
B 4 81 220180 498.77 2286 2229 437.0
C 9 54 21317 37.38 2202 2205 511.3
C 13 61 17573 30.05 2202 2205 511.3
C 8 128 16239 27.45 2202 2205 511.3
D 13 169 1484257 2745.78 2189 2122 539.8
D 8 195 119515 217.48 2189 2122 539.8
D 5 97 74679 134.42 2189 2122 539.8

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