ASTROSAT CZTI

Data Quality Report

Orbit 27445

Creation date: 2024-06-27T19:40:08.961261
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_249T01_9000003934_27445cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27445cztM0_level2_quad_clean.evt
Size (bytes)457,525,440100,180,800
Size436.3 MB 95.5 MB
Events in quadrant A3,343,140660,213
Events in quadrant B3,394,187666,920
Events in quadrant C3,356,869633,225
Events in quadrant D3,325,323625,302

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135070
B0137070
C0136160
D0137780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6424661.027397%
B6424881.369863%
C6424981.525529%
D6424530.825031%

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 7684 6424 0 0 0.00% 0.00%
B 7684 6424 1 1 0.01% 0.02%
C 7684 6425 2 2 0.03% 0.03%
D 7684 6424 15 15 0.20% 0.23%

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 13 254 11181 59.89 867 853 172.4
A 0 226 7595 39.1 867 853 172.4
A 3 137 7539 38.77 867 853 172.4
B 0 189 23654 142.96 852 833 159.6
B 12 111 18884 113.08 852 833 159.6
B 11 111 17218 102.64 852 833 159.6
C 14 238 134078 693.01 824 830 192.3
C 10 22 14186 69.46 824 830 192.3
C 13 61 5623 24.93 824 830 192.3
D 2 250 87485 438.78 835 816 197.5
D 1 52 62016 309.84 835 816 197.5
D 2 234 23641 115.56 835 816 197.5

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