ASTROSAT CZTI

Data Quality Report

Orbit 25325

Creation date: 2024-06-27T19:16:23.579858
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_059T01_9000003706_25325cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25325cztM0_level2_quad_clean.evt
Size (bytes)623,387,52096,480,000
Size594.5 MB 92.0 MB
Events in quadrant A3,956,993618,204
Events in quadrant B3,537,697624,236
Events in quadrant C5,802,210584,803
Events in quadrant D5,082,103580,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161940
B0151280
C0220630
D0200710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7382580.785695%
B7382761.029531%
C73826608.940666%
D73821652.235167%

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 8942 7384 0 0 0.00% 0.00%
B 8942 7383 2 2 0.02% 0.03%
C 8942 7383 254 254 2.84% 3.44%
D 8942 7384 87 87 0.97% 1.18%

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 15 173 482776 2658.48 901 881 181.3
A 13 254 11280 57.37 901 881 181.3
A 3 137 8437 41.68 901 881 181.3
B 12 111 21669 120.31 897 873 172.9
B 11 111 18950 104.58 897 873 172.9
B 14 111 17373 95.45 897 873 172.9
C 9 54 2332371 11597.38 852 857 201.0
C 14 238 134788 666.2 852 857 201.0
C 2 16 11844 54.65 852 857 201.0
D 8 195 976098 4619.69 874 850 211.1
D 1 52 607451 2873.43 874 850 211.1
D 12 235 70847 331.57 874 850 211.1

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