ASTROSAT CZTI

Data Quality Report

Orbit 35179

Creation date: 2022-04-01T02:20:22.958413
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/AS1C07_001T06_9000005046_35179cztM0_level2.evt modeM0/AS1C07_001T06_9000005046_35179cztM0_level2_quad_clean.evt
Size (bytes)819,630,72098,346,240
Size781.7 MB 93.8 MB
Events in quadrant A2,650,136708,998
Events in quadrant B9,577,946540,517
Events in quadrant C3,096,981722,222
Events in quadrant D9,117,657610,284

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116783
B0323762
C0127052
D0310282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5642150.265863%
B5642276549.007444%
C5642971.719248%
D5642161728.660050%

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 7135 5643 6 6 0.08% 0.11%
B 7135 5643 2044 2044 28.65% 36.22%
C 7135 5643 74 74 1.04% 1.31%
D 7135 5643 1657 1657 23.22% 29.36%

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 102839 810.93 629 618 126.1
A 9 143 34245 266.77 629 618 126.1
A 12 16 29545 229.48 629 618 126.1
B 5 236 7138305 75494.68 499 487 94.5
B 5 172 343237 3625.17 499 487 94.5
B 3 112 76243 801.25 499 487 94.5
C 0 10 250376 1745.83 620 622 143.1
C 15 214 235650 1642.89 620 622 143.1
C 1 23 91937 638.31 620 622 143.1
D 8 195 5898800 38483.92 571 559 153.3
D 8 230 281927 1835.83 571 559 153.3
D 13 249 268707 1749.57 571 559 153.3

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