ASTROSAT CZTI

Data Quality Report

Orbit 01353

Creation date: 2024-06-27T14:11:24.963494
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/AS1G04_002T02_9000000230_01353cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01353cztM0_level2_quad_clean.evt
Size (bytes)1,272,611,52096,770,880
Size1.2 GB 92.3 MB
Events in quadrant A12,569,997598,072
Events in quadrant B10,066,160634,184
Events in quadrant C7,955,728620,496
Events in quadrant D7,509,842612,659

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421422
B0345581
C0283711
D0270541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A666593814.073518%
B66651301.950488%
C6665410.615154%
D6665510.765191%

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 7195 6665 2473 2473 34.37% 37.10%
B 7195 6666 960 960 13.34% 14.40%
C 7195 6665 173 173 2.40% 2.60%
D 7195 6665 172 172 2.39% 2.58%

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 15 127 4635702 9539.12 2001 2009 485.8
A 4 32 207296 422.61 2001 2009 485.8
A 12 133 23538 44.32 2001 2009 485.8
B 8 4 1349676 2675.63 2123 2133 503.6
B 12 52 262236 516.45 2123 2133 503.6
B 4 200 141134 276.0 2123 2133 503.6
C 15 241 192158 348.51 1953 2022 545.6
C 3 79 44063 77.06 1953 2022 545.6
C 3 111 32545 55.95 1953 2022 545.6
D 13 205 128579 214.1 1898 1968 591.4
D 10 84 70153 115.3 1898 1968 591.4
D 10 125 52730 85.84 1898 1968 591.4

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