ASTROSAT CZTI

Data Quality Report

Orbit 02971

Creation date: 2024-06-27T14:22:54.468080
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/AS1G05_238T04_9000000416_02971cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02971cztM0_level2_quad_clean.evt
Size (bytes)347,290,56055,103,040
Size331.2 MB 52.6 MB
Events in quadrant A2,507,177330,916
Events in quadrant B2,239,113330,558
Events in quadrant C2,108,118337,361
Events in quadrant D3,329,252325,401

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107533
B0103952
C0101052
D0132602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4897360.735144%
B4897320.653461%
C4897200.408413%
D48971172.389218%

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 7053 4898 25 25 0.35% 0.51%
B 7053 4898 20 20 0.28% 0.41%
C 7053 4898 17 17 0.24% 0.35%
D 7053 4898 111 111 1.57% 2.27%

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 9 356095 3459.82 499 487 102.8
A 8 15 140876 1365.89 499 487 102.8
A 0 31 21520 204.64 499 487 102.8
B 2 249 75576 757.74 511 498 99.1
B 0 219 60748 608.09 511 498 99.1
B 4 81 37407 372.51 511 498 99.1
C 6 80 85644 723.43 497 499 117.7
C 10 31 23225 193.09 497 499 117.7
C 15 208 12631 103.08 497 499 117.7
D 13 114 695997 5961.68 485 473 116.7
D 15 35 202858 1734.74 485 473 116.7
D 9 35 82763 705.35 485 473 116.7

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