ASTROSAT CZTI

Data Quality Report

Orbit 33440

Creation date: 2024-06-27T20:48:52.225402
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_065T01_9000004794_33440cztM0_level2.evt modeM0/AS1A11_065T01_9000004794_33440cztM0_level2_quad_clean.evt
Size (bytes)597,695,04059,904,000
Size570.0 MB 57.1 MB
Events in quadrant A2,496,908407,527
Events in quadrant B3,448,355393,020
Events in quadrant C2,603,274399,343
Events in quadrant D9,215,194263,872

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101733
B0133702
C0105522
D0307362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497860.120530%
B49783046.106870%
C4978280.562475%
D4978268753.977501%

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 6980 4979 0 0 0.00% 0.00%
B 6980 4979 240 240 3.44% 4.82%
C 6980 4979 25 25 0.36% 0.50%
D 6980 4978 2695 2695 38.61% 54.14%

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 47 182804 1523.58 595 585 119.6
A 13 6 13943 111.69 595 585 119.6
A 13 254 8409 65.42 595 585 119.6
B 5 172 787733 7175.83 575 562 109.7
B 5 255 225623 2051.65 575 562 109.7
B 0 213 61105 551.91 575 562 109.7
C 15 214 219018 1702.94 565 569 128.3
C 0 10 109688 850.65 565 569 128.3
C 14 254 35001 268.42 565 569 128.3
D 1 52 6674840 68184.84 399 389 97.9
D 8 195 568301 5801.67 399 389 97.9
D 2 250 108599 1105.45 399 389 97.9

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