ASTROSAT CZTI

Data Quality Report

Orbit 40400

Creation date: 2024-06-27T22:15:36.917764
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/AS1A12_056T02_9000005538_40400cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40400cztM0_level2_quad_clean.evt
Size (bytes)1,858,017,600349,404,480
Size1.7 GB 333.2 MB
Events in quadrant A12,214,5322,518,488
Events in quadrant B20,984,4792,468,724
Events in quadrant C11,129,5992,491,197
Events in quadrant D22,727,8961,567,724

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494106
B0777635
C0465375
D0826225

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04560
B04560
C04560
D04560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A222571630.732354%
B2225717797.992991%
C22257580.260592%
D22257702031.540639%

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 30111 22262 112 112 0.37% 0.50%
B 30111 22262 1056 1056 3.51% 4.74%
C 30111 22262 35 35 0.12% 0.16%
D 30111 22258 3647 3647 12.11% 16.39%

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 10 83 1720718 3373.62 2508 2456 509.3
A 13 248 354919 692.02 2508 2456 509.3
A 9 143 263924 513.36 2508 2456 509.3
B 7 202 8876954 19007.58 2437 2371 466.9
B 4 170 1619835 3464.28 2437 2371 466.9
B 4 171 490332 1045.11 2437 2371 466.9
C 15 214 956627 1690.34 2446 2468 564.5
C 9 54 322983 567.81 2446 2468 564.5
C 15 159 91139 157.09 2446 2468 564.5
D 12 227 11542306 22152.5 2130 2077 520.9
D 12 191 668809 1279.85 2130 2077 520.9
D 2 250 508504 972.13 2130 2077 520.9

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