ASTROSAT CZTI

Data Quality Report

Orbit 28778

Creation date: 2024-06-27T19:56:12.171047
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/AS1C05_019T04_9000004130_28778cztM0_level2.evt modeM0/AS1C05_019T04_9000004130_28778cztM0_level2_quad_clean.evt
Size (bytes)588,242,880102,294,720
Size561.0 MB 97.6 MB
Events in quadrant A2,858,634701,195
Events in quadrant B2,846,994709,797
Events in quadrant C5,673,207642,341
Events in quadrant D6,038,043632,860

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120511
B0120651
C0211051
D0219591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5889520.883002%
B5890570.967742%
C58903265.534805%
D58905599.490662%

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 7024 5889 0 0 0.00% 0.00%
B 7025 5890 0 0 0.00% 0.00%
C 7025 5890 69 69 0.98% 1.17%
D 7025 5890 466 466 6.63% 7.91%

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 10359 65.23 736 720 147.8
A 3 137 6772 40.96 736 720 147.8
A 0 226 6419 38.57 736 720 147.8
B 12 111 15995 113.58 721 703 134.6
B 11 111 14719 104.1 721 703 134.6
B 14 111 13449 94.67 721 703 134.6
C 3 233 2768997 17742.48 679 683 156.0
C 14 238 117881 751.14 679 683 156.0
C 15 208 90315 574.46 679 683 156.0
D 8 195 1961642 12135.42 686 667 161.6
D 1 52 1407253 8704.61 686 667 161.6
D 12 233 58413 357.36 686 667 161.6

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