ASTROSAT CZTI

Data Quality Report

Orbit 16824

Creation date: 2024-06-27T17:28:17.354120
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_056T01_9000002498_16824cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16824cztM0_level2_quad_clean.evt
Size (bytes)330,223,68033,465,600
Size314.9 MB 31.9 MB
Events in quadrant A1,922,681197,945
Events in quadrant B1,918,123201,343
Events in quadrant C1,915,949188,301
Events in quadrant D4,010,002181,704

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078612
B078441
C079791
D0142711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3434501.456028%
B3434481.397787%
C3434431.252184%
D343480623.471171%

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 3850 3436 25 25 0.65% 0.73%
B 3850 3436 5 5 0.13% 0.15%
C 3850 3436 0 0 0.00% 0.00%
D 3850 3436 577 577 14.99% 16.79%

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 15 174 196897 2169.35 437 427 90.6
A 9 143 47146 515.86 437 427 90.6
A 0 226 3893 38.27 437 427 90.6
B 15 35 98883 1147.74 433 423 85.8
B 0 229 84468 979.71 433 423 85.8
B 3 64 23758 272.01 433 423 85.8
C 3 233 129111 1306.62 413 415 98.5
C 0 207 106442 1076.47 413 415 98.5
C 14 238 64141 646.99 413 415 98.5
D 1 52 2522111 27005.57 378 365 93.4
D 5 222 56342 599.46 378 365 93.4
D 2 234 12266 127.44 378 365 93.4

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