ASTROSAT CZTI

Data Quality Report

Orbit 38873

Creation date: 2024-06-27T21:57:32.470295
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_9000005408_38873cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38873cztM0_level2_quad_clean.evt
Size (bytes)410,572,80096,877,440
Size391.6 MB 92.4 MB
Events in quadrant A3,402,296652,697
Events in quadrant B3,775,984665,039
Events in quadrant C2,786,227639,106
Events in quadrant D4,773,149562,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136583
B0149862
C0119902
D0182602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5922220.371496%
B59221262.127660%
C5922120.202634%
D59223836.467410%

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 7235 5923 16 16 0.22% 0.27%
B 7235 5923 107 107 1.48% 1.81%
C 7235 5923 5 5 0.07% 0.08%
D 7235 5923 328 328 4.53% 5.54%

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 432519 3210.77 657 643 134.5
A 12 16 349787 2595.7 657 643 134.5
A 12 194 54726 402.08 657 643 134.5
B 4 251 708228 5548.87 649 631 127.5
B 5 184 320232 2506.26 649 631 127.5
B 5 172 82278 640.26 649 631 127.5
C 15 214 245062 1632.7 641 644 149.7
C 4 0 20355 131.67 641 644 149.7
C 0 10 16660 106.99 641 644 149.7
D 2 250 965973 6350.73 624 607 152.0
D 12 227 335344 2202.09 624 607 152.0
D 2 249 321877 2113.5 624 607 152.0

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