ASTROSAT CZTI

Data Quality Report

Orbit 34916

Creation date: 2022-03-14T07:39:17.077813
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_086T01_9000005002_34916cztM0_level2.evt modeM0/AS1A11_086T01_9000005002_34916cztM0_level2_quad_clean.evt
Size (bytes)400,331,52062,176,320
Size381.8 MB 59.3 MB
Events in quadrant A2,449,639388,290
Events in quadrant B2,980,953390,110
Events in quadrant C2,715,097388,404
Events in quadrant D3,637,277363,888

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105893
B0121562
C0110422
D0141962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501850.099641%
B50181793.567158%
C5018881.753687%
D50181783.547230%

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 7111 5019 0 0 0.00% 0.00%
B 7111 5018 137 137 1.93% 2.73%
C 7111 5019 80 80 1.13% 1.59%
D 7111 5019 166 166 2.33% 3.31%

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 15 169 130580 1123.87 580 570 115.7
A 10 83 59407 508.62 580 570 115.7
A 13 6 10161 82.91 580 570 115.7
B 5 172 697753 6416.23 572 559 108.7
B 12 111 13553 119.58 572 559 108.7
B 11 111 12275 107.82 572 559 108.7
C 0 10 264120 2021.11 564 568 130.4
C 15 214 211027 1613.96 564 568 130.4
C 8 111 32030 241.27 564 568 130.4
D 8 195 741546 5511.79 552 538 134.4
D 13 249 242453 1799.42 552 538 134.4
D 1 47 92772 686.06 552 538 134.4

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