ASTROSAT CZTI

Data Quality Report

Orbit 01394

Creation date: 2024-06-27T14:12:02.143710
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_014T02_9000000232_01394cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01394cztM0_level2_quad_clean.evt
Size (bytes)1,391,912,64098,328,960
Size1.3 GB 93.8 MB
Events in quadrant A16,293,289548,597
Events in quadrant B9,545,126661,980
Events in quadrant C8,153,465649,838
Events in quadrant D7,707,039634,586

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0535501
B0332560
C0291550
D0278300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6913221332.012151%
B69131311.894980%
C691360.086793%
D6913450.650947%

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 6913 6913 4471 4471 64.68% 64.68%
B 6913 6913 722 722 10.44% 10.44%
C 6913 6913 318 318 4.60% 4.60%
D 6913 6913 354 354 5.12% 5.12%

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 5889436 12412.27 1947 1959 474.3
A 4 32 2830550 5963.37 1947 1959 474.3
A 12 243 65122 133.16 1947 1959 474.3
B 8 4 456470 851.55 2230 2243 533.4
B 5 249 268196 498.59 2230 2243 533.4
B 12 52 152009 280.77 2230 2243 533.4
C 15 241 242516 429.43 2001 2069 559.9
C 7 220 38052 64.26 2001 2069 559.9
C 3 111 28736 47.63 2001 2069 559.9
D 9 53 161041 276.87 1993 2038 574.3
D 2 16 34855 57.14 1993 2038 574.3
D 5 82 33307 54.45 1993 2038 574.3

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