ASTROSAT CZTI

Data Quality Report

Orbit 35583

Creation date: 2022-04-28T12:11:01.707477
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_35583cztM0_level2.evt modeM0/AS1A10_071T01_9000005096_35583cztM0_level2_quad_clean.evt
Size (bytes)390,291,84053,856,000
Size372.2 MB 51.4 MB
Events in quadrant A2,544,612331,838
Events in quadrant B3,317,975306,719
Events in quadrant C2,932,358321,998
Events in quadrant D2,681,113315,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106523
B0131132
C0116222
D0112712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5056110.217563%
B50564358.603639%
C50561633.223892%
D5056641.265823%

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 6997 5057 0 0 0.00% 0.00%
B 6997 5057 305 305 4.36% 6.03%
C 6997 5057 120 120 1.72% 2.37%
D 6997 5057 47 47 0.67% 0.93%

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 133156 1106.19 593 582 119.8
A 15 169 114981 954.54 593 582 119.8
A 13 6 8524 66.27 593 582 119.8
B 5 172 1014178 9174.21 562 547 110.5
B 4 232 45828 409.83 562 547 110.5
B 0 189 26271 232.82 562 547 110.5
C 0 10 443070 3291.47 569 574 134.4
C 15 214 223062 1654.96 569 574 134.4
C 10 49 33162 242.4 569 574 134.4
D 13 249 174095 1239.86 571 556 140.0
D 8 195 140855 1002.37 571 556 140.0
D 12 233 45531 321.33 571 556 140.0

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