ASTROSAT CZTI

Data Quality Report

Orbit 35900

Creation date: 2022-06-08T23:33:22.858601
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_080T01_9000005146_35900cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35900cztM0_level2_quad_clean.evt
Size (bytes)446,906,88056,897,280
Size426.2 MB 54.3 MB
Events in quadrant A2,858,933361,071
Events in quadrant B3,051,094353,436
Events in quadrant C2,990,957344,080
Events in quadrant D4,290,381309,267

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113533
B0119632
C0115322
D0164592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5062110.217305%
B5062921.817463%
C50621132.232319%
D50623567.032793%

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 7184 5063 3 3 0.04% 0.06%
B 7184 5063 50 50 0.70% 0.99%
C 7184 5063 75 75 1.04% 1.48%
D 7184 5063 288 288 4.01% 5.69%

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 164003 1212.7 670 660 134.7
A 15 169 82624 608.52 670 660 134.7
A 13 6 13098 92.34 670 660 134.7
B 5 172 267154 2169.9 651 638 122.8
B 5 255 160029 1297.72 651 638 122.8
B 15 85 29462 234.68 651 638 122.8
C 0 10 273711 1899.13 631 638 143.8
C 15 214 213901 1483.17 631 638 143.8
C 9 69 32314 220.3 631 638 143.8
D 13 153 902988 5918.92 623 607 152.5
D 8 195 439594 2879.42 623 607 152.5
D 10 118 176500 1153.72 623 607 152.5

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