ASTROSAT CZTI

Data Quality Report

Orbit 03642

Creation date: 2024-06-27T14:31:51.687701
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/AS1G05_234T02_9000000474_03642cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03642cztM0_level2_quad_clean.evt
Size (bytes)2,173,824,000302,857,920
Size2.0 GB 288.8 MB
Events in quadrant A15,818,2641,805,541
Events in quadrant B15,681,8381,812,665
Events in quadrant C18,700,2281,785,111
Events in quadrant D13,659,5241,756,919

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05960
B05960
C05960
D05960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0679316
B0666185
C0761175
D0627108

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A292625411.848814%
B292622760.943203%
C2926213104.476796%
D292612490.850962%

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 32233 29269 278 278 0.86% 0.95%
B 32233 29269 36 36 0.11% 0.12%
C 32233 29269 929 929 2.88% 3.17%
D 32232 29268 130 130 0.40% 0.44%

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 13 251 2178419 3259.09 3270 3195 667.4
A 8 192 554832 826.5 3270 3195 667.4
A 13 164 207939 306.76 3270 3195 667.4
B 15 204 1455221 2286.82 3328 3245 634.9
B 4 81 365831 571.06 3328 3245 634.9
B 14 167 296773 462.3 3328 3245 634.9
C 2 53 5648735 7702.79 3167 3181 732.9
C 9 247 534545 724.99 3167 3181 732.9
C 12 4 39379 49.39 3167 3181 732.9
D 13 223 373743 482.72 3187 3093 767.8
D 13 239 361278 466.48 3187 3093 767.8
D 1 84 286966 369.7 3187 3093 767.8

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
Veto Counter