ASTROSAT CZTI

Data Quality Report

Orbit 06798

Creation date: 2024-06-27T15:11:47.674012
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/AS1G06_086T02_9000000936_06798cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06798cztM0_level2_quad_clean.evt
Size (bytes)1,808,550,720307,851,840
Size1.7 GB 293.6 MB
Events in quadrant A12,580,5831,874,077
Events in quadrant B13,684,9431,895,576
Events in quadrant C12,575,2121,866,668
Events in quadrant D14,062,9881,787,143

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0564466
B0593455
C0564315
D0592925

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05640
B05640
C05640
D05640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A276312700.977163%
B276316592.385002%
C276312250.814303%
D276312420.875828%

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 31201 27636 11 11 0.04% 0.04%
B 31201 27636 269 269 0.86% 0.97%
C 31201 27636 5 5 0.02% 0.02%
D 31201 27636 33 33 0.11% 0.12%

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 13 248 94605 137.86 3237 3160 663.3
A 0 226 30652 41.45 3237 3160 663.3
A 12 194 30037 40.52 3237 3160 663.3
B 0 228 951968 1548.1 3234 3155 612.9
B 4 81 73382 114.58 3234 3155 612.9
B 12 111 64407 99.94 3234 3155 612.9
C 9 247 173834 233.93 3156 3168 729.6
C 12 16 66870 87.31 3156 3168 729.6
C 13 61 24516 29.26 3156 3168 729.6
D 8 195 1597619 2058.56 3155 3058 774.6
D 13 169 201982 256.81 3155 3058 774.6
D 5 97 89348 111.4 3155 3058 774.6

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