ASTROSAT CZTI

Data Quality Report

Orbit 44020

Creation date: 2024-06-27T22:58:22.923037
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_023T01_9000005932_44020cztM0_level2.fits modeM0/AS1A13_023T01_9000005932_44020cztM0_level2_quad_clean.evt
Size (bytes)454,098,240108,227,520
Size433.1 MB 103.2 MB
Events in quadrant A4,401,298729,937
Events in quadrant B3,442,248749,449
Events in quadrant C3,379,303712,898
Events in quadrant D5,065,540617,012

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178812
B0147503
C0146512
D0197052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6703721.074146%
B6702701.044464%
C6702330.492390%
D67035257.832314%

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 7668 6704 9 9 0.12% 0.13%
B 7667 6703 34 34 0.44% 0.51%
C 7667 6703 20 20 0.26% 0.30%
D 7668 6704 432 432 5.63% 6.44%

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 1245216 7908.09 752 736 157.4
A 15 222 192785 1220.38 752 736 157.4
A 7 3 25237 155.69 752 736 157.4
B 0 213 130103 873.9 750 727 148.0
B 3 112 90491 606.33 750 727 148.0
B 2 2 79710 533.51 750 727 148.0
C 3 233 316064 1828.6 729 733 172.4
C 14 254 202197 1168.29 729 733 172.4
C 15 208 15994 88.5 729 733 172.4
D 5 222 1114233 6206.84 708 684 179.4
D 2 249 378963 2108.5 708 684 179.4
D 1 52 339656 1889.4 708 684 179.4

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