ASTROSAT CZTI

Data Quality Report

Orbit 48466

Creation date: 2024-09-13T20:56:33.907961
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_029T01_9000006426_48466cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48466cztM0_level2_quad_clean.evt
Size (bytes)568,082,880124,689,600
Size541.8 MB 118.9 MB
Events in quadrant A7,963,124836,688
Events in quadrant B4,664,495817,397
Events in quadrant C3,557,224824,328
Events in quadrant D4,226,787743,983

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298990
B0196020
C0165720
D0185020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79571181.482971%
B79584625.805479%
C7958100.125660%
D79581762.211611%

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 7957 7957 4 4 0.05% 0.05%
B 7958 7958 295 295 3.71% 3.71%
C 7958 7958 5 5 0.06% 0.06%
D 7958 7958 148 148 1.86% 1.86%

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 4485991 23847.43 892 873 188.1
A 13 254 15149 75.91 892 873 188.1
A 3 137 10641 51.94 892 873 188.1
B 12 16 1166480 6795.53 861 834 171.5
B 0 186 24624 138.69 861 834 171.5
B 12 111 22303 125.16 861 834 171.5
C 15 208 88516 423.87 873 880 206.8
C 12 250 21815 101.26 873 880 206.8
C 14 254 17595 80.85 873 880 206.8
D 2 249 245906 1114.59 870 843 219.9
D 5 222 183245 829.59 870 843 219.9
D 12 233 128170 579.1 870 843 219.9

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