ASTROSAT CZTI

Data Quality Report

Orbit 20201203_A10_045T01_9000004046_level2

Creation date: 2021-01-07T03:14:45.901020
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_045T01_9000004046cztM0_level2_bc.evt modeM0/AS1A10_045T01_9000004046cztM0_level2_quad_clean.evt
Size (bytes)1,115,565,120320,048,640
Size1.0 GB 305.2 MB
Events in quadrant A5,787,7522,086,672
Events in quadrant B5,923,8342,066,775
Events in quadrant C6,442,4431,945,781
Events in quadrant D13,939,0421,888,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05040
B05040
C05040
D05040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0525000
B0535550
C0571530
D0808120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A247981340.540366%
B247982320.935559%
C247984181.685620%
D2479815946.427938%

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 29328 24796 0 0 0.00% 0.00%
B 29328 24795 4 4 0.01% 0.02%
C 29328 24794 14 14 0.05% 0.06%
D 29328 24796 519 519 1.77% 2.09%

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 0 13 69016 212.59 1478 1458 317.8
A 13 254 36758 111.08 1478 1458 317.8
A 8 192 17293 49.83 1478 1458 317.8
B 10 245 189612 694.14 1473 1442 271.1
B 0 190 27716 96.92 1473 1442 271.1
B 0 230 24936 86.66 1473 1442 271.1
C 3 233 946300 2945.63 1382 1378 320.8
C 2 16 175233 541.96 1382 1378 320.8
C 13 61 8038 20.76 1382 1378 320.8
D 1 52 5025849 16053.56 1388 1353 313.0
D 8 195 2907782 9286.21 1388 1353 313.0
D 7 80 383510 1221.01 1388 1353 313.0

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