ASTROSAT CZTI

Data Quality Report

Orbit 11872

Creation date: 2024-06-27T16:19:21.399579
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/AS1A04_049T01_9000001754_11872cztM0_level2.evt modeM0/AS1A04_049T01_9000001754_11872cztM0_level2_quad_clean.evt
Size (bytes)525,438,72079,945,920
Size501.1 MB 76.2 MB
Events in quadrant A3,576,104486,613
Events in quadrant B4,474,931482,022
Events in quadrant C3,151,907490,176
Events in quadrant D4,226,319465,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152953
B0180542
C0145342
D0173542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71181552.177578%
B71183645.113796%
C7118831.166058%
D71182002.809778%

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 7554 7120 1 1 0.01% 0.01%
B 7554 7120 121 121 1.60% 1.70%
C 7554 7120 0 0 0.00% 0.00%
D 7554 7120 109 109 1.44% 1.53%

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 140428 838.78 818 798 166.5
A 1 178 72917 433.23 818 798 166.5
A 1 161 63845 378.73 818 798 166.5
B 4 239 691023 4479.98 813 791 154.1
B 15 185 271695 1758.31 813 791 154.1
B 3 64 161313 1041.87 813 791 154.1
C 13 61 5945 27.54 805 807 186.6
C 8 128 4135 17.84 805 807 186.6
C 8 222 3852 16.32 805 807 186.6
D 8 195 356785 1886.58 789 764 188.7
D 1 52 318534 1683.88 789 764 188.7
D 13 122 212934 1124.3 789 764 188.7

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