ASTROSAT CZTI

Data Quality Report

Orbit 37597

Creation date: 2024-06-27T21:42:00.366946
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/AS1T05_053T01_9000005338_37597cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37597cztM0_level2_quad_clean.evt
Size (bytes)399,830,40062,991,360
Size381.3 MB 60.1 MB
Events in quadrant A2,861,879380,603
Events in quadrant B2,829,075385,514
Events in quadrant C2,905,797385,299
Events in quadrant D3,126,983359,776

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118543
B0120372
C0120652
D0132742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5659120.212052%
B5659430.759852%
C5659480.848206%
D56591081.908464%

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 7182 5659 4 4 0.06% 0.07%
B 7182 5660 25 25 0.35% 0.44%
C 7182 5659 41 41 0.57% 0.72%
D 7182 5660 102 102 1.42% 1.80%

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 330897 2539.41 637 623 130.1
A 13 6 22026 164.56 637 623 130.1
A 9 143 18637 138.51 637 623 130.1
B 5 172 79444 649.37 634 617 121.4
B 0 230 69788 569.82 634 617 121.4
B 5 255 47462 385.9 634 617 121.4
C 15 214 247872 1715.74 618 621 144.1
C 0 10 178990 1237.75 618 621 144.1
C 14 254 42005 287.18 618 621 144.1
D 2 249 241658 1602.6 613 596 150.4
D 1 47 174833 1158.34 613 596 150.4
D 12 233 84807 559.84 613 596 150.4

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