ASTROSAT CZTI

Data Quality Report

Orbit 05826

Creation date: 2024-06-27T14:59:35.078880
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/AS1G06_052T01_9000000754_05826cztM0_level2.evt modeM0/AS1G06_052T01_9000000754_05826cztM0_level2_quad_clean.evt
Size (bytes)644,639,040142,827,840
Size614.8 MB 136.2 MB
Events in quadrant A4,501,903914,561
Events in quadrant B4,680,298918,912
Events in quadrant C4,521,655911,790
Events in quadrant D5,119,581866,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02116516
B0212476
C0212446
D0231824

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10302780.757135%
B10306600.582185%
C10306700.679216%
D103082752.667831%

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 10758 10309 2 2 0.02% 0.02%
B 10758 10309 4 4 0.04% 0.04%
C 10758 10309 19 19 0.18% 0.18%
D 10759 10310 123 123 1.14% 1.19%

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 15 236 40693 169.94 1144 1119 232.9
A 15 174 16184 64.69 1144 1119 232.9
A 15 223 12713 49.79 1144 1119 232.9
B 15 204 127093 573.94 1159 1128 219.5
B 4 48 25031 108.91 1159 1128 219.5
B 12 111 20297 87.34 1159 1128 219.5
C 1 16 97593 371.5 1123 1126 259.7
C 12 4 34541 128.68 1123 1126 259.7
C 13 61 9150 30.9 1123 1126 259.7
D 2 63 633638 2311.81 1113 1078 273.6
D 12 233 57428 205.94 1113 1078 273.6
D 8 195 48031 171.6 1113 1078 273.6

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