ASTROSAT CZTI

Data Quality Report

Orbit 04325

Creation date: 2024-06-27T14:40:24.041585
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_219T01_9000000540_04325cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04325cztM0_level2_quad_clean.evt
Size (bytes)815,938,56063,720,000
Size778.1 MB 60.8 MB
Events in quadrant A3,393,443432,272
Events in quadrant B14,472,060204,831
Events in quadrant C3,273,436424,299
Events in quadrant D3,132,527413,267

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141253
B0475287
C0141172
D0137682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64891542.373247%
B6488492075.832306%
C64891342.065033%
D6489921.417784%

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 7599 6489 38 38 0.50% 0.59%
B 7599 6489 4394 4394 57.82% 67.71%
C 7599 6489 49 49 0.64% 0.76%
D 7599 6489 22 22 0.29% 0.34%

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 8 15 154365 946.43 794 776 162.3
A 14 111 86512 528.31 794 776 162.3
A 15 234 33772 203.32 794 776 162.3
B 3 0 12323468 123234.16 523 513 100.0
B 8 3 26334 258.22 523 513 100.0
B 14 167 25070 245.58 523 513 100.0
C 9 247 292077 1633.8 763 765 178.3
C 13 61 6600 32.73 763 765 178.3
C 14 48 1958 6.69 763 765 178.3
D 13 239 59676 316.64 769 747 186.1
D 2 136 46852 247.73 769 747 186.1
D 13 223 37049 195.06 769 747 186.1

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