ASTROSAT CZTI

Data Quality Report

Orbit 36809

Creation date: 2024-06-27T21:31:55.257779
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/AS1A11_075T01_9000005244_36809cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36809cztM0_level2_quad_clean.evt
Size (bytes)816,661,44073,607,040
Size778.8 MB 70.2 MB
Events in quadrant A2,913,449582,715
Events in quadrant B13,160,454181,413
Events in quadrant C2,891,534595,666
Events in quadrant D5,421,101507,226

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120543
B0425722
C0117412
D0197832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5125340.663415%
B5125492296.039024%
C5125921.795122%
D512580215.648780%

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 7008 5126 23 23 0.33% 0.45%
B 7007 5124 4818 4818 68.76% 94.03%
C 7008 5126 69 69 0.98% 1.35%
D 7008 5126 765 765 10.92% 14.92%

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 14 235 283929 2321.39 599 588 122.1
A 10 83 231688 1893.38 599 588 122.1
A 13 248 61998 503.13 599 588 122.1
B 12 1 10788983 227282.09 242 237 47.5
B 5 172 1243386 26188.91 242 237 47.5
B 0 221 43675 915.09 242 237 47.5
C 15 214 219101 1585.02 592 595 137.9
C 0 10 188530 1363.26 592 595 137.9
C 14 254 159631 1153.63 592 595 137.9
D 12 3 1925211 14433.56 544 529 133.3
D 1 20 665695 4988.21 544 529 133.3
D 13 249 355186 2659.64 544 529 133.3

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