ASTROSAT CZTI

Data Quality Report

Orbit 18182

Creation date: 2024-06-27T17:46:24.060134
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/AS1A05_160T02_9000002710_18182cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18182cztM0_level2_quad_clean.evt
Size (bytes)510,670,08069,511,680
Size487.0 MB 66.3 MB
Events in quadrant A3,484,962416,783
Events in quadrant B3,542,810419,644
Events in quadrant C3,772,220407,619
Events in quadrant D4,208,121390,703

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143954
B0145253
C0152903
D0168433

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6736911.350950%
B67361101.633017%
C67361782.642518%
D67363194.735748%

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 7726 6738 3 3 0.04% 0.04%
B 7726 6738 10 10 0.13% 0.15%
C 7726 6738 20 20 0.26% 0.30%
D 7726 6738 211 211 2.73% 3.13%

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 15 174 93449 521.64 880 862 177.5
A 4 2 9492 48.62 880 862 177.5
A 0 226 7884 39.56 880 862 177.5
B 7 220 70642 419.71 872 853 166.3
B 0 189 21068 121.57 872 853 166.3
B 12 111 19422 111.67 872 853 166.3
C 4 254 358054 1823.85 840 847 195.9
C 14 238 130686 662.94 840 847 195.9
C 13 61 5797 25.27 840 847 195.9
D 7 238 659596 3177.48 847 824 207.3
D 9 64 173539 833.06 847 824 207.3
D 10 70 73306 349.61 847 824 207.3

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