ASTROSAT CZTI

Data Quality Report

Orbit 35578

Creation date: 2024-06-27T21:15:15.322157
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/AS1A10_071T01_9000005096_35578cztM0_level2.evt modeM0/AS1A10_071T01_9000005096_35578cztM0_level2_quad_clean.evt
Size (bytes)252,495,36034,346,880
Size240.8 MB 32.8 MB
Events in quadrant A1,474,998220,290
Events in quadrant B2,547,512188,337
Events in quadrant C1,749,583210,888
Events in quadrant D1,672,470209,356

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062222
B094631
C069381
D069011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A294850.169607%
B294845115.298507%
C29481073.629579%
D2948190.644505%

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 4770 2949 0 0 0.00% 0.00%
B 4770 2949 325 325 6.81% 11.02%
C 4770 2949 73 73 1.53% 2.48%
D 4770 2949 15 15 0.31% 0.51%

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 72982 989.11 360 355 73.4
A 9 143 5976 76.55 360 355 73.4
A 13 6 4818 60.78 360 355 73.4
B 5 172 1234457 18750.52 332 323 65.8
B 12 111 7899 115.1 332 323 65.8
B 11 111 7098 102.93 332 323 65.8
C 0 10 268689 3305.27 345 348 81.2
C 15 214 120613 1481.35 345 348 81.2
C 14 67 11707 139.91 345 348 81.2
D 12 233 62649 724.34 349 340 86.0
D 7 80 61012 705.31 349 340 86.0
D 13 249 57680 666.57 349 340 86.0

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