ASTROSAT CZTI

Data Quality Report

Orbit 05917

Creation date: 2024-06-27T15:00:48.278208
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_174T01_9000000766_05917cztM0_level2.evt modeM0/AS1A02_174T01_9000000766_05917cztM0_level2_quad_clean.evt
Size (bytes)652,734,72076,147,200
Size622.5 MB 72.6 MB
Events in quadrant A2,955,214479,584
Events in quadrant B3,250,364481,742
Events in quadrant C3,513,929466,746
Events in quadrant D9,609,376423,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133445
B0140207
C0150702
D0330232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6507270.414938%
B6506380.584076%
C65081542.366318%
D6508111317.102028%

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 7643 6509 2 2 0.03% 0.03%
B 7643 6509 8 8 0.10% 0.12%
C 7643 6509 114 114 1.49% 1.75%
D 7643 6509 1266 1266 16.56% 19.45%

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 15 234 55208 354.76 748 731 153.6
A 15 236 15867 98.57 748 731 153.6
A 0 226 7355 43.13 748 731 153.6
B 15 85 92425 630.5 757 739 145.4
B 0 229 74271 505.66 757 739 145.4
B 15 204 47164 319.25 757 739 145.4
C 9 247 449644 2662.32 726 730 168.6
C 1 16 216367 1278.85 726 730 168.6
C 9 68 10390 57.29 726 730 168.6
D 1 20 5975167 34760.11 701 681 171.9
D 2 63 557272 3238.3 701 681 171.9
D 2 152 293061 1701.09 701 681 171.9

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