ASTROSAT CZTI

Data Quality Report

Orbit 48594

Creation date: 2024-09-22T13:07:09.165944
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/AS1A13_037T01_9000006436_48594cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48594cztM0_level2_quad_clean.evt
Size (bytes)450,218,880107,205,120
Size429.4 MB 102.2 MB
Events in quadrant A6,887,140686,497
Events in quadrant B3,348,239733,632
Events in quadrant C2,876,830710,682
Events in quadrant D3,024,250640,450

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252802
B0147022
C0139732
D0144612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68132834.153824%
B68131361.996184%
C6813330.484368%
D6813400.587113%

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 7628 6814 36 36 0.47% 0.53%
B 7628 6814 7 7 0.09% 0.10%
C 7628 6814 0 0 0.00% 0.00%
D 7628 6814 15 15 0.20% 0.22%

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 4060653 26465.16 729 714 153.4
A 13 254 12771 78.59 729 714 153.4
A 13 248 10354 62.84 729 714 153.4
B 12 16 284848 1935.7 740 717 146.8
B 0 183 117455 795.3 740 717 146.8
B 12 111 19361 127.01 740 717 146.8
C 12 249 11215 60.79 730 735 172.4
C 12 250 8648 45.9 730 735 172.4
C 14 67 7308 38.13 730 735 172.4
D 7 80 106639 586.39 721 698 180.7
D 13 171 80182 439.95 721 698 180.7
D 2 249 50250 274.28 721 698 180.7

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