ASTROSAT CZTI

Data Quality Report

Orbit 41859

Creation date: 2024-06-27T22:33:43.257296
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/AS1C07_001T11_9000005710_41859cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41859cztM0_level2_quad_clean.evt
Size (bytes)716,261,760167,837,760
Size683.1 MB 160.1 MB
Events in quadrant A8,240,3261,100,700
Events in quadrant B4,695,1501,149,042
Events in quadrant C5,692,8201,100,338
Events in quadrant D7,057,455992,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0317653
B0219303
C0240093
D0288664

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106764704.402398%
B10676310.290371%
C106763533.306482%
D106756516.098361%

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 13452 10678 326 326 2.42% 3.05%
B 13452 10678 14 14 0.10% 0.13%
C 13452 10678 338 338 2.51% 3.17%
D 13451 10677 546 546 4.06% 5.11%

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 14 24 2786843 12223.46 1115 1092 227.9
A 10 83 983819 4312.06 1115 1092 227.9
A 2 79 153511 668.79 1115 1092 227.9
B 0 245 89834 415.84 1123 1090 213.4
B 15 85 39386 179.45 1123 1090 213.4
B 5 32 36179 164.42 1123 1090 213.4
C 0 10 1032355 4096.87 1085 1090 251.7
C 15 214 414821 1643.61 1085 1090 251.7
C 15 111 10250 36.39 1085 1090 251.7
D 13 249 1711173 6459.85 1084 1052 264.7
D 2 249 459016 1729.92 1084 1052 264.7
D 12 218 295486 1112.2 1084 1052 264.7

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