ASTROSAT CZTI

Data Quality Report

Orbit 29952

Creation date: 2024-06-27T20:09:08.567500
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/AS1A10_058T01_9000004298_29952cztM0_level2.evt modeM0/AS1A10_058T01_9000004298_29952cztM0_level2_quad_clean.evt
Size (bytes)588,741,12078,465,600
Size561.5 MB 74.8 MB
Events in quadrant A3,366,937492,966
Events in quadrant B5,687,647479,510
Events in quadrant C3,905,333461,324
Events in quadrant D4,403,845461,955

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142521
B0216481
C0162061
D0174541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68911061.538238%
B68912433.526339%
C68911652.394428%
D68911862.699173%

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 7521 6892 0 0 0.00% 0.00%
B 7521 6892 62 62 0.82% 0.90%
C 7521 6892 0 0 0.00% 0.00%
D 7521 6892 100 100 1.33% 1.45%

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 13 254 13207 71.66 868 850 172.4
A 8 192 12687 68.64 868 850 172.4
A 3 137 8503 44.38 868 850 172.4
B 6 159 2034644 12510.54 846 824 162.6
B 3 64 306879 1882.62 846 824 162.6
B 12 111 19723 116.25 846 824 162.6
C 3 233 561674 2937.13 819 824 191.0
C 14 238 135528 705.44 819 824 191.0
C 2 114 16538 82.29 819 824 191.0
D 12 233 426725 2164.27 833 813 196.8
D 8 195 395371 2004.94 833 813 196.8
D 6 112 220174 1114.68 833 813 196.8

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