ASTROSAT CZTI

Data Quality Report

Orbit 38220

Creation date: 2024-06-27T21:49:56.836470
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/AS1A07_145T01_9000005370_38220cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38220cztM0_level2_quad_clean.evt
Size (bytes)336,234,24097,151,040
Size320.7 MB 92.7 MB
Events in quadrant A2,985,518648,633
Events in quadrant B2,698,792667,615
Events in quadrant C3,218,207634,294
Events in quadrant D3,096,244589,395

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123143
B0118262
C0132192
D0132122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5745200.348129%
B5745200.348129%
C5745661.148825%
D5745641.114012%

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 7178 5746 9 9 0.13% 0.16%
B 7178 5746 12 12 0.17% 0.21%
C 7178 5746 48 48 0.67% 0.84%
D 7178 5746 55 55 0.77% 0.96%

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 399125 3018.64 645 630 132.0
A 12 189 53582 401.12 645 630 132.0
A 10 248 22338 164.44 645 630 132.0
B 0 183 73889 586.78 643 624 124.9
B 5 172 50870 402.42 643 624 124.9
B 0 229 24565 191.75 643 624 124.9
C 3 9 241106 1629.18 626 628 147.6
C 15 214 238206 1609.53 626 628 147.6
C 9 236 210735 1423.43 626 628 147.6
D 13 138 221350 1445.46 629 612 152.7
D 10 199 150625 982.33 629 612 152.7
D 1 52 69048 448.14 629 612 152.7

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