ASTROSAT CZTI

Data Quality Report

Orbit 34294

Creation date: 2022-01-31T06:58:21.941470
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/AS1T04_086T01_9000004890_34294cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34294cztM0_level2_quad_clean.evt
Size (bytes)437,397,12049,890,240
Size417.1 MB 47.6 MB
Events in quadrant A2,455,691284,594
Events in quadrant B3,371,802285,874
Events in quadrant C3,085,462293,681
Events in quadrant D3,977,466278,578

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107163
B0133572
C0120712
D0152952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524980.152410%
B52491993.791198%
C52491102.095637%
D5249470.895409%

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 7312 5250 3 3 0.04% 0.06%
B 7312 5250 132 132 1.81% 2.51%
C 7312 5250 84 84 1.15% 1.60%
D 7312 5250 38 38 0.52% 0.72%

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 9 143 33529 267.46 616 604 123.1
A 10 83 26244 208.28 616 604 123.1
A 13 6 11100 85.26 616 604 123.1
B 5 172 522408 4497.4 612 596 116.0
B 4 251 133055 1141.64 612 596 116.0
B 0 189 80854 691.73 612 596 116.0
C 14 254 337769 2411.48 608 614 139.8
C 15 214 227709 1624.28 608 614 139.8
C 0 10 103222 733.9 608 614 139.8
D 8 195 1042572 6745.38 603 590 154.5
D 12 235 322843 2086.14 603 590 154.5
D 7 223 117429 756.37 603 590 154.5

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