ASTROSAT CZTI

Data Quality Report

Orbit 29108

Creation date: 2024-06-27T20:00:16.001100
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/AS1A10_063T01_9000004182_29108cztM0_level2.evt modeM0/AS1A10_063T01_9000004182_29108cztM0_level2_quad_clean.evt
Size (bytes)590,526,72075,732,480
Size563.2 MB 72.2 MB
Events in quadrant A3,546,043471,636
Events in quadrant B3,689,754477,489
Events in quadrant C4,573,093461,493
Events in quadrant D5,652,037445,662

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147142
B0151112
C0179962
D0211392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6255661.055156%
B62551001.598721%
C62551943.101519%
D62545588.922290%

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 7585 6256 0 0 0.00% 0.00%
B 7585 6256 10 10 0.13% 0.16%
C 7585 6256 1 1 0.01% 0.02%
D 7584 6255 457 457 6.03% 7.31%

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 11501 58.71 917 901 180.6
A 3 137 7862 38.55 917 901 180.6
A 0 226 7804 38.23 917 901 180.6
B 10 245 112598 666.36 908 891 167.6
B 12 111 19344 110.08 908 891 167.6
B 11 111 17551 99.38 908 891 167.6
C 3 233 931797 4570.15 891 901 203.7
C 14 238 147264 718.56 891 901 203.7
C 2 114 15953 73.9 891 901 203.7
D 1 52 1824576 8934.33 876 856 204.1
D 8 195 394276 1927.35 876 856 204.1
D 10 199 29899 142.28 876 856 204.1

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