ASTROSAT CZTI

Data Quality Report

Orbit 13700

Creation date: 2024-06-27T16:44:49.426018
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/AS1T02_040T01_9000002030_13700cztM0_level2.evt modeM0/AS1T02_040T01_9000002030_13700cztM0_level2_quad_clean.evt
Size (bytes)972,432,000163,690,560
Size927.4 MB 156.1 MB
Events in quadrant A6,333,5081,032,892
Events in quadrant B6,792,5921,101,541
Events in quadrant C6,247,691991,604
Events in quadrant D9,192,778928,350

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271945
B0282674
C0268404
D0358944

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130631371.048764%
B130631881.439179%
C13063870.666003%
D130634093.130981%

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 14529 13068 4 4 0.03% 0.03%
B 14529 13068 13 13 0.09% 0.10%
C 14529 13067 1 1 0.01% 0.01%
D 14529 13068 261 261 1.80% 2.00%

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 1 162 53814 160.52 1600 1569 325.5
A 15 157 53187 158.59 1600 1569 325.5
A 15 69 32300 94.42 1600 1569 325.5
B 0 219 213202 693.01 1619 1585 305.4
B 4 48 138789 449.32 1619 1585 305.4
B 12 111 35159 109.95 1619 1585 305.4
C 3 233 197402 547.65 1544 1555 357.6
C 14 234 27855 73.54 1544 1555 357.6
C 13 61 11116 26.74 1544 1555 357.6
D 5 222 1055505 2858.08 1523 1480 368.8
D 1 52 829239 2244.54 1523 1480 368.8
D 13 122 709268 1919.23 1523 1480 368.8

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