ASTROSAT CZTI

Data Quality Report

Orbit 28615

Creation date: 2024-06-27T19:54:01.102619
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_045T06_9000004108_28615cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28615cztM0_level2_quad_clean.evt
Size (bytes)1,321,462,080196,848,000
Size1.2 GB 187.7 MB
Events in quadrant A7,605,2891,249,291
Events in quadrant B7,928,0581,274,060
Events in quadrant C8,013,4701,215,309
Events in quadrant D15,436,9551,162,203

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318863
B0328053
C0330963
D0567463

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15373930.604957%
B153741460.949655%
C153745503.577468%
D1537314349.328043%

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 18753 15373 1 1 0.01% 0.01%
B 18754 15374 39 39 0.21% 0.25%
C 18754 15374 0 0 0.00% 0.00%
D 18753 15374 1289 1289 6.87% 8.38%

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 24880 59.0 1963 1925 389.1
A 15 47 22267 52.28 1963 1925 389.1
A 3 137 18806 43.39 1963 1925 389.1
B 10 245 285914 786.52 1930 1883 361.1
B 12 111 44550 118.15 1930 1883 361.1
B 11 111 40967 108.23 1930 1883 361.1
C 14 238 444589 1026.3 1865 1883 431.4
C 14 254 208274 478.46 1865 1883 431.4
C 7 247 73955 167.08 1865 1883 431.4
D 1 52 5588086 12926.25 1841 1796 432.2
D 8 195 2645401 6117.1 1841 1796 432.2
D 2 250 128630 293.48 1841 1796 432.2

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