ASTROSAT CZTI

Data Quality Report

Orbit 43701

Creation date: 2024-06-27T22:54:43.716067
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/AS1A13_008T02_9000005900_43701cztM0_level2.fits modeM0/AS1A13_008T02_9000005900_43701cztM0_level2_quad_clean.evt
Size (bytes)671,613,120105,793,920
Size640.5 MB 100.9 MB
Events in quadrant A8,102,344716,256
Events in quadrant B3,441,057755,834
Events in quadrant C5,462,981678,250
Events in quadrant D7,336,837584,969

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288082
B0145032
C0207002
D0264752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67043004.474940%
B67041011.506563%
C67046429.576372%
D670499414.826969%

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 7669 6705 48 48 0.63% 0.72%
B 7669 6705 11 11 0.14% 0.16%
C 7669 6705 459 459 5.99% 6.85%
D 7669 6705 773 773 10.08% 11.53%

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 15 222 3782936 23938.51 763 747 158.0
A 10 83 900288 5693.44 763 747 158.0
A 14 63 346059 2185.57 763 747 158.0
B 5 235 159252 1030.85 777 752 153.8
B 4 206 76721 494.08 777 752 153.8
B 4 171 42936 274.35 777 752 153.8
C 15 157 2013293 11524.22 740 742 174.6
C 3 233 280163 1600.01 740 742 174.6
C 15 173 77071 437.07 740 742 174.6
D 7 80 1745742 9421.8 720 701 185.2
D 12 33 504298 2719.01 720 701 185.2
D 8 48 376213 2027.46 720 701 185.2

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