ASTROSAT CZTI

Data Quality Report

Orbit 13712

Creation date: 2024-06-27T16:45:06.393837
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/AS1T02_041T01_9000002032_13712cztM0_level2.evt modeM0/AS1T02_041T01_9000002032_13712cztM0_level2_quad_clean.evt
Size (bytes)507,562,560141,776,640
Size484.0 MB 135.2 MB
Events in quadrant A3,474,316935,439
Events in quadrant B3,711,506961,060
Events in quadrant C3,782,375950,736
Events in quadrant D3,885,842916,979

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155052
B0159481
C0163391
D0165921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7615610.801051%
B7615961.260670%
C76151301.707157%
D7615841.103086%

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 7746 7617 0 0 0.00% 0.00%
B 7746 7617 8 8 0.10% 0.11%
C 7746 7617 47 47 0.61% 0.62%
D 7746 7617 32 32 0.41% 0.42%

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 1 162 20418 107.56 893 873 181.7
A 15 222 10117 50.87 893 873 181.7
A 0 226 7960 39.0 893 873 181.7
B 8 250 111710 657.42 894 869 168.6
B 4 80 40661 236.01 894 869 168.6
B 0 219 24021 137.32 894 869 168.6
C 4 254 293749 1478.71 865 868 198.1
C 3 233 104945 525.47 865 868 198.1
C 14 234 9038 41.25 865 868 198.1
D 1 52 221257 1061.49 867 840 207.6
D 8 195 215082 1031.75 867 840 207.6
D 13 249 66139 314.47 867 840 207.6

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