ASTROSAT CZTI

Data Quality Report

Orbit 39051

Creation date: 2024-06-27T21:59:47.815827
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/AS1A12_077T06_9000005430_39051cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39051cztM0_level2_quad_clean.evt
Size (bytes)495,095,04085,944,960
Size472.2 MB 82.0 MB
Events in quadrant A8,811,991452,783
Events in quadrant B2,440,483635,275
Events in quadrant C2,666,248600,589
Events in quadrant D3,985,808532,720

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299933
B0109272
C0111622
D0155212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5434182533.584836%
B543470.128819%
C5434160.294442%
D54343396.238498%

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 7136 5435 1741 1741 24.40% 32.03%
B 7136 5435 0 0 0.00% 0.00%
C 7136 5435 13 13 0.18% 0.24%
D 7136 5435 290 290 4.06% 5.34%

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 5986775 52672.63 558 547 113.6
A 10 83 382314 3359.16 558 547 113.6
A 13 210 247681 2174.52 558 547 113.6
B 12 111 15339 124.97 611 594 118.0
B 11 111 13747 111.47 611 594 118.0
B 14 111 13351 108.12 611 594 118.0
C 15 214 230899 1652.51 598 602 139.4
C 15 208 91676 653.51 598 602 139.4
C 15 159 5848 37.64 598 602 139.4
D 2 249 1073872 7516.18 586 570 142.8
D 1 47 555357 3885.09 586 570 142.8
D 12 233 35156 242.2 586 570 142.8

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