ASTROSAT CZTI

Data Quality Report

Orbit 25286

Creation date: 2024-06-27T19:15:56.569100
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/AS1A09_022T01_9000003702_25286cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25286cztM0_level2_quad_clean.evt
Size (bytes)498,044,160112,953,600
Size475.0 MB 107.7 MB
Events in quadrant A3,457,212770,821
Events in quadrant B3,754,929768,028
Events in quadrant C3,446,965724,192
Events in quadrant D3,994,436715,869

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143550
B0151780
C0141150
D0160310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6331851.342600%
B63311662.622019%
C63321211.910929%
D63311061.674301%

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 7611 6331 0 0 0.00% 0.00%
B 7611 6331 22 22 0.29% 0.35%
C 7612 6332 1 1 0.01% 0.02%
D 7611 6332 31 31 0.41% 0.49%

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 11163 58.35 894 878 176.3
A 0 226 7907 39.88 894 878 176.3
A 3 137 7206 35.9 894 878 176.3
B 3 64 199390 1255.09 867 849 158.2
B 3 112 134111 842.42 867 849 158.2
B 12 111 18058 108.79 867 849 158.2
C 14 238 139865 724.86 838 846 191.8
C 0 207 19915 99.43 838 846 191.8
C 0 239 14362 70.47 838 846 191.8
D 1 52 382858 1844.29 862 839 207.1
D 8 195 236900 1139.64 862 839 207.1
D 12 233 79235 378.48 862 839 207.1

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