ASTROSAT CZTI

Data Quality Report

Orbit 45939

Creation date: 2024-06-27T23:17:56.747040
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_033T03_9000006144_45939cztM0_level2.fits modeM0/AS1A13_033T03_9000006144_45939cztM0_level2_quad_clean.evt
Size (bytes)518,088,960110,888,640
Size494.1 MB 105.8 MB
Events in quadrant A5,842,987749,935
Events in quadrant B5,673,317706,573
Events in quadrant C3,371,843753,312
Events in quadrant D3,768,340679,159

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218601
B0213841
C0148721
D0159341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67171632.426679%
B671886212.831200%
C6718941.399226%
D67181362.024412%

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 7787 6717 0 0 0.00% 0.00%
B 7788 6718 523 523 6.72% 7.79%
C 7788 6719 57 57 0.73% 0.85%
D 7788 6719 101 101 1.30% 1.50%

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 2845520 17886.77 768 752 159.0
A 0 247 16233 97.34 768 752 159.0
A 3 137 8781 50.48 768 752 159.0
B 3 112 2539032 17533.64 739 717 144.8
B 4 158 132108 907.6 739 717 144.8
B 4 171 18459 122.55 739 717 144.8
C 14 254 305000 1711.65 755 759 177.7
C 10 20 72748 405.01 755 759 177.7
C 12 249 23943 130.43 755 759 177.7
D 1 47 244041 1301.16 748 726 187.0
D 11 241 174188 927.61 748 726 187.0
D 2 249 90428 479.69 748 726 187.0

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