ASTROSAT CZTI

Data Quality Report

Orbit 35682

Creation date: 2022-09-12T17:15:10.204582
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/AS1A09_029T03_9000005108_35682cztM0_level2.evt modeM0/AS1A09_029T03_9000005108_35682cztM0_level2_quad_clean.evt
Size (bytes)436,037,76068,339,520
Size415.8 MB 65.2 MB
Events in quadrant A2,632,815447,726
Events in quadrant B3,658,049443,227
Events in quadrant C3,071,870419,257
Events in quadrant D3,493,368398,691

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110492
B0141322
C0122272
D0138532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A513880.155703%
B51383556.909303%
C51381683.269755%
D51382564.982483%

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 7261 5139 0 0 0.00% 0.00%
B 7261 5139 259 259 3.57% 5.04%
C 7261 5139 149 149 2.05% 2.90%
D 7261 5139 261 261 3.59% 5.08%

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 146443 1177.33 617 606 123.9
A 15 169 57338 457.99 617 606 123.9
A 13 6 19269 150.66 617 606 123.9
B 5 172 907597 7948.76 598 582 114.1
B 5 255 317568 2777.95 598 582 114.1
B 5 31 26322 225.58 598 582 114.1
C 0 10 410378 3062.04 576 582 133.8
C 15 214 213534 1591.2 576 582 133.8
C 9 187 168022 1251.13 576 582 133.8
D 7 223 375832 2705.58 572 557 138.7
D 10 118 330482 2378.62 572 557 138.7
D 12 128 266691 1918.71 572 557 138.7

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