ASTROSAT CZTI

Data Quality Report

Orbit 20359

Creation date: 2024-06-27T18:14:22.605988
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/AS1A05_163T01_9000003010_20359cztM0_level2.evt modeM0/AS1A05_163T01_9000003010_20359cztM0_level2_quad_clean.evt
Size (bytes)899,717,760170,735,040
Size858.0 MB 162.8 MB
Events in quadrant A6,266,8231,077,708
Events in quadrant B6,398,6761,086,473
Events in quadrant C6,343,6751,046,559
Events in quadrant D7,337,6901,041,132

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273183
B0274873
C0272833
D0310403

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133122041.532452%
B133132391.795238%
C133132932.200856%
D133133662.749193%

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 15032 13312 0 0 0.00% 0.00%
B 15033 13314 1 1 0.01% 0.01%
C 15033 13314 0 0 0.00% 0.00%
D 15033 13314 105 105 0.70% 0.79%

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 16240 44.98 1622 1583 325.9
A 6 16 15768 43.53 1622 1583 325.9
A 3 137 14236 38.83 1622 1583 325.9
B 12 111 39291 121.59 1609 1562 310.3
B 11 111 35743 110.16 1609 1562 310.3
B 0 183 35504 109.39 1609 1562 310.3
C 14 238 241464 655.71 1561 1572 365.9
C 13 61 10904 25.51 1561 1572 365.9
C 3 233 8320 18.44 1561 1572 365.9
D 1 52 1056126 2502.99 1566 1534 421.3
D 7 238 236875 558.56 1566 1534 421.3
D 2 234 59123 136.68 1566 1534 421.3

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