ASTROSAT CZTI

Data Quality Report

Orbit 12108

Creation date: 2024-06-27T16:22:30.890405
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/AS1G08_065T01_9000001796_12108cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12108cztM0_level2_quad_clean.evt
Size (bytes)1,067,742,720182,767,680
Size1018.3 MB 174.3 MB
Events in quadrant A6,832,5401,176,622
Events in quadrant B10,015,5371,141,376
Events in quadrant C6,003,7351,174,340
Events in quadrant D8,577,8661,115,652

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295524
B0390023
C0274583
D0347303

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134122732.035491%
B1341210167.575306%
C13412830.618849%
D134126104.548166%

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 15013 13417 48 48 0.32% 0.36%
B 15013 13416 574 574 3.82% 4.28%
C 15013 13417 6 6 0.04% 0.04%
D 15013 13417 389 389 2.59% 2.90%

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 1 162 279433 880.02 1562 1525 315.8
A 14 63 200303 629.45 1562 1525 315.8
A 1 178 105215 328.34 1562 1525 315.8
B 4 239 3213449 10997.7 1525 1484 292.1
B 4 206 365900 1247.75 1525 1484 292.1
B 11 51 174857 593.63 1525 1484 292.1
C 15 208 47729 131.48 1516 1524 351.4
C 14 234 20095 52.84 1516 1524 351.4
C 13 61 11327 27.89 1516 1524 351.4
D 1 52 1930189 5401.61 1490 1444 357.1
D 8 195 348207 971.14 1490 1444 357.1
D 14 34 318210 887.13 1490 1444 357.1

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