ASTROSAT CZTI

Data Quality Report

Orbit 00738

Creation date: 2024-06-27T14:02:16.726924
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/AS1P01_010T01_9000000108_00738cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00738cztM0_level2_quad_clean.evt
Size (bytes)1,131,537,60092,047,680
Size1.1 GB 87.8 MB
Events in quadrant A7,724,831600,922
Events in quadrant B9,027,740604,049
Events in quadrant C7,207,111593,690
Events in quadrant D9,888,853545,095

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274550
B0313060
C0259200
D0339270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6353140.220368%
B63521722.707809%
C635260.094458%
D63525318.359572%

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 7578 6354 242 242 3.19% 3.81%
B 7577 6353 860 860 11.35% 13.54%
C 7577 6353 140 140 1.85% 2.20%
D 7577 6353 1745 1745 23.03% 27.47%

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 15 171 368558 805.59 1905 1915 455.1
A 10 230 41420 86.8 1905 1915 455.1
A 11 79 7907 13.17 1905 1915 455.1
B 8 38 1097597 2334.87 2010 2017 469.2
B 7 221 186296 392.73 2010 2017 469.2
B 5 191 24113 47.09 2010 2017 469.2
C 15 241 37930 71.73 1819 1886 502.5
C 3 111 25555 47.1 1819 1886 502.5
C 9 52 15567 27.23 1819 1886 502.5
D 13 25 2526325 4796.8 1707 1766 526.3
D 6 226 341485 645.48 1707 1766 526.3
D 7 207 263441 497.2 1707 1766 526.3

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