ASTROSAT CZTI

Data Quality Report

Orbit 35141

Creation date: 2022-03-29T13:51:49.269421
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/AS1A11_047T09_9000005028_35141cztM0_level2.evt modeM0/AS1A11_047T09_9000005028_35141cztM0_level2_quad_clean.evt
Size (bytes)194,172,48013,449,600
Size185.2 MB 12.8 MB
Events in quadrant A1,278,57853,563
Events in quadrant B1,346,88554,034
Events in quadrant C1,481,09953,728
Events in quadrant D1,588,52551,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056321
B057750
C060140
D063860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A269700.000000%
B269760.222469%
C2697271.001112%
D2697281.038191%

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 2697 2697 1 1 0.04% 0.04%
B 2697 2697 1 1 0.04% 0.04%
C 2697 2697 26 26 0.96% 0.96%
D 2697 2697 39 39 1.45% 1.45%

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 15 169 104181 1685.7 297 292 61.6
A 10 83 17059 272.06 297 292 61.6
A 13 6 7941 124.11 297 292 61.6
B 0 189 77294 1278.22 296 286 60.2
B 5 172 74933 1239.03 296 286 60.2
B 3 112 18217 297.63 296 286 60.2
C 15 214 107965 1541.9 289 292 69.8
C 9 187 89255 1273.97 289 292 69.8
C 14 67 77713 1108.69 289 292 69.8
D 8 195 228315 3160.91 286 277 72.1
D 2 153 120069 1660.48 286 277 72.1
D 2 250 61972 855.17 286 277 72.1

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