ASTROSAT CZTI

Data Quality Report

Orbit 25505

Creation date: 2024-06-27T19:18:25.115665
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/AS1A08_003T17_9000003720_25505cztM0_level2.evt modeM0/AS1A08_003T17_9000003720_25505cztM0_level2_quad_clean.evt
Size (bytes)492,598,08075,461,760
Size469.8 MB 72.0 MB
Events in quadrant A3,509,158480,096
Events in quadrant B3,597,922486,393
Events in quadrant C3,463,916447,121
Events in quadrant D3,925,265436,917

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140980
B0145350
C0139120
D0155260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6216951.528314%
B62161322.123552%
C62161452.332690%
D62161081.737452%

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 7546 6217 0 0 0.00% 0.00%
B 7546 6217 0 0 0.00% 0.00%
C 7546 6217 0 0 0.00% 0.00%
D 7546 6217 28 28 0.37% 0.45%

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 8334 41.46 910 898 179.3
A 0 226 7844 38.73 910 898 179.3
A 3 137 7523 36.94 910 898 179.3
B 5 235 59361 346.74 898 882 168.7
B 0 190 29451 169.4 898 882 168.7
B 12 111 19722 111.71 898 882 168.7
C 14 238 137532 704.82 843 852 193.9
C 3 233 24866 123.83 843 852 193.9
C 0 10 11802 56.47 843 852 193.9
D 1 52 422877 2024.05 861 840 208.5
D 8 195 196142 936.65 861 840 208.5
D 7 238 38326 179.78 861 840 208.5

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