ASTROSAT CZTI

Data Quality Report

Orbit 42835

Creation date: 2024-06-27T22:44:48.492124
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/AS1T05_138T01_9000005828_42835cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42835cztM0_level2_quad_clean.evt
Size (bytes)335,473,92090,996,480
Size319.9 MB 86.8 MB
Events in quadrant A3,135,883606,238
Events in quadrant B2,354,750629,836
Events in quadrant C2,900,996611,233
Events in quadrant D3,620,505542,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125062
B0105562
C0118162
D0143092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5215330.632790%
B521560.115053%
C5215370.709492%
D52151773.394056%

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 7158 5216 18 18 0.25% 0.35%
B 7158 5216 0 0 0.00% 0.00%
C 7158 5216 30 30 0.42% 0.58%
D 7158 5216 173 173 2.42% 3.32%

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 614463 5085.45 583 572 120.7
A 15 222 181230 1496.56 583 572 120.7
A 12 189 56163 460.51 583 572 120.7
B 0 190 44511 392.13 585 569 112.1
B 12 111 13635 116.6 585 569 112.1
B 11 111 12459 106.11 585 569 112.1
C 14 254 343729 2573.34 569 575 133.3
C 15 214 213185 1594.38 569 575 133.3
C 7 220 81758 608.8 569 575 133.3
D 1 52 722625 5312.71 558 545 135.9
D 10 118 185564 1361.28 558 545 135.9
D 1 47 108595 794.98 558 545 135.9

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