ASTROSAT CZTI

Data Quality Report

Orbit 04690

Creation date: 2024-06-27T14:45:42.668227
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/AS1G05_235T01_9000000590_04690cztM0_level2.evt modeM0/AS1G05_235T01_9000000590_04690cztM0_level2_quad_clean.evt
Size (bytes)546,405,12085,253,760
Size521.1 MB 81.3 MB
Events in quadrant A3,464,320543,278
Events in quadrant B3,194,524556,297
Events in quadrant C2,893,777551,111
Events in quadrant D6,570,455493,386

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145703
B0137802
C0128802
D0239572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62711322.104927%
B6271831.323553%
C6271160.255143%
D627191014.511242%

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 7606 6272 76 76 1.00% 1.21%
B 7606 6272 26 26 0.34% 0.41%
C 7606 6272 0 0 0.00% 0.00%
D 7606 6272 790 790 10.39% 12.60%

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 15 174 561739 3811.54 729 714 147.2
A 8 15 47065 314.9 729 714 147.2
A 14 111 27622 182.81 729 714 147.2
B 15 204 92172 646.56 751 734 141.4
B 15 54 64087 447.97 751 734 141.4
B 4 48 41417 287.67 751 734 141.4
C 14 48 15370 86.43 732 736 169.3
C 9 247 7282 38.66 732 736 169.3
C 13 61 6010 31.15 732 736 169.3
D 13 235 2231419 13656.97 679 659 163.3
D 12 110 1089247 6664.46 679 659 163.3
D 2 234 252188 1539.89 679 659 163.3

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