ASTROSAT CZTI

Data Quality Report

Orbit 21513

Creation date: 2024-06-27T18:28:49.817973
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/AS1T03_141T01_9000003174_21513cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21513cztM0_level2_quad_clean.evt
Size (bytes)539,020,800105,814,080
Size514.1 MB 100.9 MB
Events in quadrant A3,615,375681,894
Events in quadrant B3,766,743693,055
Events in quadrant C3,552,168676,667
Events in quadrant D4,893,388643,472

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153350
B0157220
C0152340
D0192360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7318851.161520%
B73181461.995081%
C73191021.393633%
D73192863.907638%

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 7603 7319 0 0 0.00% 0.00%
B 7603 7319 28 28 0.37% 0.38%
C 7604 7320 0 0 0.00% 0.00%
D 7604 7320 253 253 3.33% 3.46%

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 48 85026 457.62 915 894 183.8
A 13 254 12595 63.65 915 894 183.8
A 0 226 8059 38.97 915 894 183.8
B 3 64 97500 553.11 908 885 174.7
B 0 230 46307 260.04 908 885 174.7
B 4 190 28146 156.07 908 885 174.7
C 14 238 136608 657.32 875 879 206.5
C 13 61 6082 25.2 875 879 206.5
C 0 239 4727 18.64 875 879 206.5
D 1 52 996681 4342.89 873 856 229.3
D 14 35 219064 951.63 873 856 229.3
D 13 153 134242 581.71 873 856 229.3

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