ASTROSAT CZTI

Data Quality Report

Orbit 24972

Creation date: 2024-06-27T19:12:08.323062
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/AS1T03_200T01_9000003654_24972cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24972cztM0_level2_quad_clean.evt
Size (bytes)470,252,160127,549,440
Size448.5 MB 121.6 MB
Events in quadrant A3,089,409869,678
Events in quadrant B3,316,914881,283
Events in quadrant C3,135,834841,850
Events in quadrant D4,240,528799,703

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137261
B0142271
C0137731
D0173541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6745681.008154%
B67461201.778832%
C6746831.230359%
D67463775.588497%

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 7365 6746 5 5 0.07% 0.07%
B 7366 6747 28 28 0.38% 0.41%
C 7366 6747 0 0 0.00% 0.00%
D 7366 6747 322 322 4.37% 4.77%

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 4 2 24348 148.06 793 776 159.2
A 13 254 11161 65.23 793 776 159.2
A 3 137 7161 40.11 793 776 159.2
B 10 246 91202 610.24 792 773 148.2
B 3 64 54674 363.74 792 773 148.2
B 0 190 33182 218.71 792 773 148.2
C 14 238 121741 689.79 758 763 175.4
C 7 247 58053 326.65 758 763 175.4
C 13 61 5336 26.07 758 763 175.4
D 1 52 828212 4603.94 747 725 179.7
D 8 195 426260 2367.57 747 725 179.7
D 7 238 119001 658.06 747 725 179.7

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