ASTROSAT CZTI

Data Quality Report

Orbit 14895

Creation date: 2024-06-27T17:01:02.419707
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_011T09_9000002202_14895cztM0_level2.evt modeM0/AS1A04_011T09_9000002202_14895cztM0_level2_quad_clean.evt
Size (bytes)118,031,04013,547,520
Size112.6 MB 12.9 MB
Events in quadrant A842,85476,326
Events in quadrant B1,040,07175,826
Events in quadrant C798,08373,245
Events in quadrant D787,68271,653

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033320
B041130
C031830
D032060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1519171.119157%
B1519372.435813%
C151990.592495%
D1519110.724161%

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 1519 1519 1 1 0.07% 0.07%
B 1519 1519 3 3 0.20% 0.20%
C 1519 1519 0 0 0.00% 0.00%
D 1519 1519 0 0 0.00% 0.00%

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 14 237 29570 686.24 208 204 42.8
A 9 143 8307 189.36 208 204 42.8
A 0 226 1890 39.4 208 204 42.8
B 3 64 168541 4196.76 203 198 40.1
B 0 189 47913 1189.53 203 198 40.1
B 0 229 9995 244.24 203 198 40.1
C 3 233 28476 604.23 197 199 46.8
C 13 61 1429 26.28 197 199 46.8
C 3 232 585 8.25 197 199 46.8
D 7 254 11531 232.99 198 194 48.7
D 13 104 10178 205.18 198 194 48.7
D 10 199 5359 106.15 198 194 48.7

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