ASTROSAT CZTI

Data Quality Report

Orbit 38200

Creation date: 2024-06-27T21:49:39.694373
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/AS1A07_145T01_9000005370_38200cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38200cztM0_level2_quad_clean.evt
Size (bytes)305,470,08094,357,440
Size291.3 MB 90.0 MB
Events in quadrant A2,766,903635,111
Events in quadrant B2,406,185663,169
Events in quadrant C2,640,846633,411
Events in quadrant D3,106,295577,132

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112223
B0101642
C0106962
D0123812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4971220.442567%
B4971100.201167%
C4971200.402334%
D4971781.569101%

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 6973 4972 9 9 0.13% 0.18%
B 6973 4972 1 1 0.01% 0.02%
C 6973 4972 16 16 0.23% 0.32%
D 6973 4972 76 76 1.09% 1.53%

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 349736 2927.06 589 578 119.3
A 9 143 86952 724.09 589 578 119.3
A 13 6 18339 148.89 589 578 119.3
B 5 172 18030 154.79 598 584 112.7
B 15 35 14933 127.31 598 584 112.7
B 12 111 13701 116.38 598 584 112.7
C 15 214 206684 1517.92 590 596 135.8
C 14 254 75734 553.42 590 596 135.8
C 0 10 21229 151.97 590 596 135.8
D 10 203 253184 1786.93 583 568 141.4
D 7 55 133477 940.16 583 568 141.4
D 13 249 113588 799.47 583 568 141.4

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