ASTROSAT CZTI

Data Quality Report

Orbit 22526

Creation date: 2024-06-27T18:42:20.833936
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/AS1A08_003T01_9000003342_22526cztM0_level2.evt modeM0/AS1A08_003T01_9000003342_22526cztM0_level2_quad_clean.evt
Size (bytes)503,449,92095,725,440
Size480.1 MB 91.3 MB
Events in quadrant A3,413,303604,140
Events in quadrant B3,803,784615,689
Events in quadrant C3,500,970598,169
Events in quadrant D4,043,848583,626

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148222
B0160252
C0149502
D0169032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7144470.657895%
B71441992.785554%
C71451341.875437%
D71451211.693492%

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 8574 7145 0 0 0.00% 0.00%
B 8574 7144 19 19 0.22% 0.27%
C 8575 7146 0 0 0.00% 0.00%
D 8575 7146 101 101 1.18% 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 13 254 11926 61.43 885 865 180.1
A 3 137 7862 38.86 885 865 180.1
A 0 226 7781 38.41 885 865 180.1
B 15 33 318497 1855.04 882 860 171.2
B 12 111 20508 114.75 882 860 171.2
B 11 111 18052 100.4 882 860 171.2
C 14 238 135394 670.11 856 862 200.8
C 0 10 17977 85.25 856 862 200.8
C 10 22 9858 44.81 856 862 200.8
D 1 52 541974 2578.19 859 835 209.9
D 15 145 100722 475.9 859 835 209.9
D 13 172 82635 389.73 859 835 209.9

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