ASTROSAT CZTI

Data Quality Report

Orbit 25359

Creation date: 2024-06-27T19:16:46.331049
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/AS1A09_061T02_9000003708_25359cztM0_level2.evt modeM0/AS1A09_061T02_9000003708_25359cztM0_level2_quad_clean.evt
Size (bytes)495,397,440144,648,000
Size472.4 MB 137.9 MB
Events in quadrant A3,859,3361,013,688
Events in quadrant B3,386,8121,027,115
Events in quadrant C3,379,736969,067
Events in quadrant D3,971,695953,669

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159970
B0139210
C0140190
D0161170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59811071.788998%
B59811151.922755%
C59811813.026250%
D59811091.822438%

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 7296 5981 0 0 0.00% 0.00%
B 7296 5981 1 1 0.01% 0.02%
C 7296 5981 0 0 0.00% 0.00%
D 7296 5981 17 17 0.23% 0.28%

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 6 16 541522 3226.1 858 845 167.6
A 15 173 10615 58.3 858 845 167.6
A 13 254 8432 45.27 858 845 167.6
B 3 112 53000 340.23 842 828 153.3
B 0 229 28682 181.65 842 828 153.3
B 12 111 17468 108.52 842 828 153.3
C 14 238 135440 733.4 810 818 183.6
C 3 233 86053 464.35 810 818 183.6
C 13 61 5554 25.8 810 818 183.6
D 1 52 385390 1962.14 830 807 196.0
D 8 195 278034 1414.41 830 807 196.0
D 9 35 131106 664.79 830 807 196.0

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