ASTROSAT CZTI

Data Quality Report

Orbit 20220416_A11_097T07_9000005072_level2

Creation date: 2022-04-24T03:20:29.151866
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_097T07_9000005072cztM0_level2_bc.evt modeM0/AS1A11_097T07_9000005072cztM0_level2_quad_clean.evt
Size (bytes)3,969,956,160715,452,480
Size3.7 GB 682.3 MB
Events in quadrant A13,779,2204,840,767
Events in quadrant B52,104,3473,480,303
Events in quadrant C19,682,6254,733,859
Events in quadrant D30,422,4644,332,531

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01276490
B03532570
C01459800
D01925530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02410
B02410
C02410
D02410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012760
B012760
C012760
D012760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62257800.128500%
B622562972347.743189%
C6225710471.681739%
D6225750088.044075%

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 86519 62270 4 4 0.00% 0.01%
B 86519 62254 704 704 0.81% 1.13%
C 86519 62257 108 108 0.12% 0.17%
D 86519 62255 876 876 1.01% 1.41%

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 1094891 1548.46 3212 3165 705.0
A 13 6 113888 157.04 3212 3165 705.0
A 9 143 96254 132.03 3212 3165 705.0
B 4 251 31596274 61034.35 2580 2530 517.6
B 5 236 7105192 13721.27 2580 2530 517.6
B 5 200 1474110 2842.87 2580 2530 517.6
C 0 207 2697617 3746.42 3134 3106 719.2
C 15 214 2377903 3301.89 3134 3106 719.2
C 0 10 1969459 2734.0 3134 3106 719.2
D 7 80 9620903 13313.03 3043 2945 722.4
D 8 195 1865386 2577.96 3043 2945 722.4
D 13 249 1109109 1531.13 3043 2945 722.4

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