ASTROSAT CZTI

Data Quality Report

Orbit 46318

Creation date: 2024-06-27T23:21:39.183841
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_200T01_9000006196_46318cztM0_level2.fits modeM0/AS1T05_200T01_9000006196_46318cztM0_level2_quad_clean.evt
Size (bytes)764,519,04093,127,680
Size729.1 MB 88.8 MB
Events in quadrant A17,075,553102,441
Events in quadrant B3,724,529787,483
Events in quadrant C3,342,915746,843
Events in quadrant D3,604,958688,553

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0556001
B0157531
C0153491
D0158441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7094634289.399493%
B70941452.043981%
C7094791.113617%
D7095761.071177%

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 7534 7095 5525 5525 73.33% 77.87%
B 7534 7095 18 18 0.24% 0.25%
C 7534 7095 25 25 0.33% 0.35%
D 7535 7096 25 25 0.33% 0.35%

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 15 223 13850841 184474.27 356 349 75.1
A 10 83 1399784 18639.03 356 349 75.1
A 15 239 438446 5835.0 356 349 75.1
B 3 112 297620 1873.94 795 770 158.4
B 4 171 128652 807.29 795 770 158.4
B 5 172 124443 780.72 795 770 158.4
C 12 250 142693 773.49 774 778 183.5
C 1 3 79407 428.56 774 778 183.5
C 12 2 49164 263.72 774 778 183.5
D 1 52 186827 948.18 778 753 196.2
D 13 249 150907 765.14 778 753 196.2
D 11 224 65690 330.9 778 753 196.2

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