ASTROSAT CZTI

Data Quality Report

Orbit 24097

Creation date: 2024-06-27T19:02:07.105899
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/AS1A07_027T15_9000003562_24097cztM0_level2.evt modeM0/AS1A07_027T15_9000003562_24097cztM0_level2_quad_clean.evt
Size (bytes)430,871,04087,658,560
Size410.9 MB 83.6 MB
Events in quadrant A2,916,611576,479
Events in quadrant B3,134,865586,752
Events in quadrant C2,840,429558,328
Events in quadrant D3,768,777533,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140401889
B0149022015
C0139481962
D0202105371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013414
B013624
C013218
D013521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5774490.848632%
B5747821.426831%
C5747601.044023%
D55672694.832046%

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 7793 6000 11 11 0.14% 0.18%
B 7793 5978 11 11 0.14% 0.18%
C 7793 5998 0 0 0.00% 0.00%
D 7793 5795 205 205 2.63% 3.54%

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 6 16 79456 535.77 730 716 147.0
A 2 250 21681 142.65 730 716 147.0
A 13 254 9872 62.3 730 716 147.0
B 15 33 175418 1270.15 717 700 137.6
B 0 190 146410 1059.27 717 700 137.6
B 12 111 16214 112.78 717 700 137.6
C 14 238 110641 686.48 690 696 160.2
C 0 239 35044 214.46 690 696 160.2
C 7 247 8694 49.94 690 696 160.2
D 8 195 613487 3754.54 668 649 163.2
D 12 233 428979 2624.15 668 649 163.2
D 12 218 56293 340.9 668 649 163.2

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