ASTROSAT CZTI

Data Quality Report

Orbit 26502

Creation date: 2024-06-27T19:29:49.787358
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/AS1C05_017T01_9000003836_26502cztM0_level2.evt modeM0/AS1C05_017T01_9000003836_26502cztM0_level2_quad_clean.evt
Size (bytes)602,127,36080,982,720
Size574.2 MB 77.2 MB
Events in quadrant A3,746,873514,268
Events in quadrant B3,844,669517,087
Events in quadrant C4,786,356490,301
Events in quadrant D5,420,718479,741

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152470
B0155090
C0189660
D0206280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64641021.577970%
B64651111.716937%
C64652724.207270%
D64645408.353960%

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 7744 6464 0 0 0.00% 0.00%
B 7745 6465 9 9 0.12% 0.14%
C 7745 6465 76 76 0.98% 1.18%
D 7744 6464 414 414 5.35% 6.40%

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 13 254 10734 51.15 968 955 191.2
A 0 226 8441 39.16 968 955 191.2
A 3 137 7531 34.4 968 955 191.2
B 15 33 55373 310.95 949 932 175.1
B 0 190 35051 194.88 949 932 175.1
B 0 219 20793 113.44 949 932 175.1
C 3 233 880779 4221.79 912 924 208.4
C 4 254 159300 759.93 912 924 208.4
C 14 238 148989 710.46 912 924 208.4
D 1 52 1184123 5459.21 916 900 216.7
D 12 233 588173 2709.59 916 900 216.7
D 15 0 93701 428.17 916 900 216.7

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