ASTROSAT CZTI

Data Quality Report

Orbit 38198

Creation date: 2024-06-27T21:49:37.738712
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/AS1A07_145T01_9000005370_38198cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38198cztM0_level2_quad_clean.evt
Size (bytes)1,448,544,960404,792,640
Size1.3 GB 386.0 MB
Events in quadrant A12,237,4532,749,646
Events in quadrant B12,223,7932,784,486
Events in quadrant C12,274,2182,648,670
Events in quadrant D15,025,6282,420,223

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0761
B0750
C0773
D0761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04954
B04942
C04920
D04951

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051201374
B052693404
C051699401
D060547437

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24017460.191531%
B240172280.949328%
C240071680.699796%
D240227783.238698%

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 31699 24180 12 12 0.04% 0.05%
B 31699 24185 169 169 0.53% 0.70%
C 31699 24178 140 140 0.44% 0.58%
D 31699 24185 775 775 2.44% 3.20%

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 1425288 2632.5 2692 2637 540.4
A 12 189 238692 436.8 2692 2637 540.4
A 0 247 83036 148.77 2692 2637 540.4
B 5 184 909424 1801.4 2677 2605 503.4
B 5 172 213097 418.14 2677 2605 503.4
B 0 229 174186 340.85 2677 2605 503.4
C 15 214 975893 1590.08 2630 2641 612.1
C 14 254 851749 1387.25 2630 2641 612.1
C 12 249 72185 113.62 2630 2641 612.1
D 7 55 1146654 1820.64 2610 2541 628.4
D 2 16 785077 1245.26 2610 2541 628.4
D 10 199 659796 1045.9 2610 2541 628.4

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