ASTROSAT CZTI

Data Quality Report

Orbit 29446

Creation date: 2024-06-27T20:04:11.944832
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_110T02_9000004234_29446cztM0_level2.evt modeM0/AS1A10_110T02_9000004234_29446cztM0_level2_quad_clean.evt
Size (bytes)846,996,48079,024,320
Size807.8 MB 75.4 MB
Events in quadrant A3,767,383483,769
Events in quadrant B4,056,526488,420
Events in quadrant C4,535,427468,751
Events in quadrant D12,778,886423,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158802
B0166922
C0181872
D0431412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76001051.381579%
B76001682.210526%
C76002343.078947%
D7600362947.750000%

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 7850 7601 1 1 0.01% 0.01%
B 7850 7601 16 16 0.20% 0.21%
C 7850 7601 2 2 0.03% 0.03%
D 7850 7601 2776 2776 35.36% 36.52%

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 13486 63.22 975 956 198.2
A 3 137 9798 44.62 975 956 198.2
A 0 226 8251 36.81 975 956 198.2
B 15 33 100399 534.58 958 932 186.1
B 0 156 70612 374.49 958 932 186.1
B 0 229 44496 234.13 958 932 186.1
C 3 233 759259 3478.14 924 930 218.0
C 14 238 150494 685.99 924 930 218.0
C 2 114 18102 78.76 924 930 218.0
D 12 33 4699824 24277.22 797 775 193.6
D 7 80 2632403 13596.07 797 775 193.6
D 13 104 1191755 6153.09 797 775 193.6

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