ASTROSAT CZTI

Data Quality Report

Orbit 22695

Creation date: 2024-06-27T18:44:30.483449
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/AS1A08_007T01_9000003362_22695cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22695cztM0_level2_quad_clean.evt
Size (bytes)474,860,16097,462,080
Size452.9 MB 92.9 MB
Events in quadrant A3,188,315651,795
Events in quadrant B3,211,976660,332
Events in quadrant C3,175,250624,831
Events in quadrant D4,409,829606,859

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130821
B0131251
C0131051
D0169911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5837601.027925%
B5836641.096642%
C5836931.593557%
D58362714.643592%

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 7142 5838 3 3 0.04% 0.05%
B 7141 5837 2 2 0.03% 0.03%
C 7141 5837 2 2 0.03% 0.03%
D 7141 5837 213 213 2.98% 3.65%

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 4 2 38679 236.43 817 802 160.2
A 13 254 9840 56.41 817 802 160.2
A 0 226 7435 41.4 817 802 160.2
B 0 230 24326 159.44 801 787 147.6
B 0 245 16559 106.83 801 787 147.6
B 0 219 16438 106.01 801 787 147.6
C 14 238 124463 698.5 775 783 177.1
C 10 22 26515 145.32 775 783 177.1
C 13 61 5338 25.72 775 783 177.1
D 12 33 753169 3967.51 788 769 189.6
D 1 52 429955 2263.16 788 769 189.6
D 5 222 57078 296.92 788 769 189.6

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