ASTROSAT CZTI

Data Quality Report

Orbit 06275

Creation date: 2024-06-27T15:05:01.173571
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/AS1C02_018T02_9000000824_06275cztM0_level2.evt modeM0/AS1C02_018T02_9000000824_06275cztM0_level2_quad_clean.evt
Size (bytes)1,159,329,600168,030,720
Size1.1 GB 160.2 MB
Events in quadrant A9,203,4411,012,084
Events in quadrant B8,068,2341,031,214
Events in quadrant C6,496,4841,053,022
Events in quadrant D10,357,630985,660

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366114
B0336123
C0296993
D0406333

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145882551.748012%
B145883492.392377%
C14588900.616945%
D145886304.318618%

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 16253 14589 38 38 0.23% 0.26%
B 16253 14589 156 156 0.96% 1.07%
C 16253 14591 0 0 0.00% 0.00%
D 16253 14589 520 520 3.20% 3.56%

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 8 15 1938564 5608.26 1686 1644 345.4
A 15 236 519117 1498.32 1686 1644 345.4
A 13 251 220986 635.09 1686 1644 345.4
B 3 64 715361 2159.09 1707 1667 330.6
B 0 219 269695 810.85 1707 1667 330.6
B 4 81 267397 803.89 1707 1667 330.6
C 8 128 14245 32.78 1654 1664 383.8
C 13 61 13380 30.53 1654 1664 383.8
C 9 54 11708 26.17 1654 1664 383.8
D 12 220 2558843 6358.43 1631 1582 402.2
D 12 221 353662 875.42 1631 1582 402.2
D 2 152 352191 871.76 1631 1582 402.2

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