ASTROSAT CZTI

Data Quality Report

Orbit 37089

Creation date: 2024-06-27T21:35:26.341508
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_138T04_9000005282_37089cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37089cztM0_level2_quad_clean.evt
Size (bytes)416,370,24062,314,560
Size397.1 MB 59.4 MB
Events in quadrant A2,861,477392,732
Events in quadrant B3,312,736389,181
Events in quadrant C2,834,389379,805
Events in quadrant D3,249,160361,992

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116463
B0130792
C0113342
D0130702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5179591.139216%
B51792835.464375%
C5179510.984746%
D51791583.050782%

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 7092 5180 32 32 0.45% 0.62%
B 7092 5180 206 206 2.90% 3.98%
C 7092 5180 43 43 0.61% 0.83%
D 7092 5180 157 157 2.21% 3.03%

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 262211 2100.54 614 602 124.5
A 15 237 146117 1168.39 614 602 124.5
A 13 248 52636 417.8 614 602 124.5
B 5 172 486906 4237.36 601 586 114.8
B 5 184 335029 2914.04 601 586 114.8
B 0 182 35706 306.0 601 586 114.8
C 15 214 221700 1606.45 593 597 137.6
C 0 10 172897 1251.87 593 597 137.6
C 1 23 60456 434.91 593 597 137.6
D 2 153 197648 1370.04 589 572 143.8
D 2 250 161476 1118.58 589 572 143.8
D 13 171 130707 904.68 589 572 143.8

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter