ASTROSAT CZTI

Data Quality Report

Orbit 42870

Creation date: 2024-06-27T22:45:13.026863
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/AS1T05_138T01_9000005828_42870cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42870cztM0_level2_quad_clean.evt
Size (bytes)415,670,40095,739,840
Size396.4 MB 91.3 MB
Events in quadrant A3,389,175644,503
Events in quadrant B2,746,374664,846
Events in quadrant C3,286,374646,707
Events in quadrant D5,495,008520,618

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136592
B0124442
C0135153
D0205752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6039350.579566%
B6040110.182119%
C6039470.778275%
D603984013.909588%

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 9055 6041 22 22 0.24% 0.36%
B 9056 6042 6 6 0.07% 0.10%
C 9055 6041 38 38 0.42% 0.63%
D 9055 6041 829 829 9.16% 13.72%

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 10 83 634155 4677.18 650 637 135.4
A 15 237 109273 802.05 650 637 135.4
A 12 189 40719 295.92 650 637 135.4
B 15 35 49739 386.16 652 634 127.2
B 4 171 44281 343.24 652 634 127.2
B 15 85 39143 302.83 652 634 127.2
C 15 214 245735 1623.24 639 644 151.0
C 12 2 176932 1167.56 639 644 151.0
C 14 254 138708 914.4 639 644 151.0
D 10 118 968460 6516.84 598 580 148.5
D 12 6 946440 6368.58 598 580 148.5
D 13 249 750442 5048.9 598 580 148.5

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