ASTROSAT CZTI

Data Quality Report

Orbit 03969

Creation date: 2024-06-27T14:35:47.878815
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/AS1G05_229T02_9000000508_03969cztM0_level2.evt modeM0/AS1G05_229T02_9000000508_03969cztM0_level2_quad_clean.evt
Size (bytes)482,497,92066,070,080
Size460.1 MB 63.0 MB
Events in quadrant A3,600,750380,219
Events in quadrant B3,890,968380,051
Events in quadrant C3,270,847379,337
Events in quadrant D3,366,838365,940

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155512
B0159611
C0148261
D0151621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71061972.772305%
B71062012.828596%
C71061472.068674%
D71061432.012384%

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 7596 7107 31 31 0.41% 0.44%
B 7596 7107 22 22 0.29% 0.31%
C 7596 7107 3 3 0.04% 0.04%
D 7596 7107 11 11 0.14% 0.15%

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 0 118 210032 1199.49 839 821 174.4
A 0 50 57684 326.02 839 821 174.4
A 12 247 48319 272.32 839 821 174.4
B 3 0 203846 1222.08 851 828 166.1
B 15 204 141232 845.17 851 828 166.1
B 4 81 70746 420.87 851 828 166.1
C 9 144 62411 317.96 819 821 193.7
C 13 61 6869 31.22 819 821 193.7
C 10 65 6809 30.91 819 821 193.7
D 4 95 57087 283.13 812 787 198.8
D 13 239 52150 258.3 812 787 198.8
D 2 118 48463 239.76 812 787 198.8

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