ASTROSAT CZTI

Data Quality Report

Orbit 48418

Creation date: 2024-09-10T14:27:25.355715
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_48418cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48418cztM0_level2_quad_clean.evt
Size (bytes)353,534,40085,870,080
Size337.2 MB 81.9 MB
Events in quadrant A5,425,440532,553
Events in quadrant B2,498,741596,904
Events in quadrant C2,342,937581,966
Events in quadrant D2,416,021526,188

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236083636
B0122531259
C0119331178
D0122421253

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012016
B012018
C012014
D012016

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49442404.854369%
B5224761.454824%
C5261130.247101%
D5261310.589242%

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 7110 5348 80 80 1.13% 1.50%
B 7111 5529 11 11 0.15% 0.20%
C 7111 5556 0 0 0.00% 0.00%
D 7112 5569 3 3 0.04% 0.05%

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 2912353 24802.08 563 551 117.4
A 13 248 325963 2771.79 563 551 117.4
A 13 254 9625 77.29 563 551 117.4
B 12 16 118640 993.7 596 579 118.8
B 12 111 14652 118.45 596 579 118.8
B 11 111 13882 111.97 596 579 118.8
C 15 208 15464 105.16 595 597 141.4
C 11 16 6670 42.96 595 597 141.4
C 13 61 3944 23.67 595 597 141.4
D 2 249 24920 162.41 597 579 149.9
D 13 171 24905 162.31 597 579 149.9
D 2 234 24245 157.9 597 579 149.9

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