ASTROSAT CZTI

Data Quality Report

Orbit 05500

Creation date: 2024-06-27T14:55:59.128638
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/AS1A02_162T01_9000000704_05500cztM0_level2.evt modeM0/AS1A02_162T01_9000000704_05500cztM0_level2_quad_clean.evt
Size (bytes)468,498,24066,804,480
Size446.8 MB 63.7 MB
Events in quadrant A3,250,010409,642
Events in quadrant B3,014,237423,397
Events in quadrant C3,319,841408,507
Events in quadrant D4,217,492382,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136292
B0127001
C0137121
D0164441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56991893.316371%
B5699641.123004%
C56991572.754869%
D56992584.527110%

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 6979 5700 129 129 1.85% 2.26%
B 6979 5700 9 9 0.13% 0.16%
C 6979 5700 104 104 1.49% 1.82%
D 6979 5700 218 218 3.12% 3.82%

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 0 50 665197 4881.29 667 653 136.1
A 13 6 7623 51.2 667 653 136.1
A 12 194 6686 44.31 667 653 136.1
B 15 204 144730 1111.22 683 668 129.6
B 0 219 104299 799.36 683 668 129.6
B 4 48 72956 557.59 683 668 129.6
C 9 247 611928 4125.84 638 641 148.2
C 1 16 163815 1101.33 638 641 148.2
C 1 241 30379 200.71 638 641 148.2
D 2 63 1149346 7344.15 634 613 156.4
D 2 136 394358 2517.31 634 613 156.4
D 2 33 98944 628.65 634 613 156.4

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