ASTROSAT CZTI

Data Quality Report

Orbit 37031

Creation date: 2024-06-27T21:34:31.805013
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/AS1T05_046T01_9000005266_37031cztM0_level2.evt modeM0/AS1T05_046T01_9000005266_37031cztM0_level2_quad_clean.evt
Size (bytes)395,300,16051,027,840
Size377.0 MB 48.7 MB
Events in quadrant A2,529,354306,843
Events in quadrant B2,804,574308,006
Events in quadrant C3,588,921290,480
Events in quadrant D2,708,200288,110

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010737112
B011635146
C014220264
D011593184

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01031
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0230
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5016170.338915%
B5011390.778288%
C50001943.880000%
D4995501.001001%

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 7027 5062 9 9 0.13% 0.18%
B 7027 5060 30 30 0.43% 0.59%
C 7027 5054 170 170 2.42% 3.36%
D 7027 5057 48 48 0.68% 0.95%

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 221636 1883.83 581 571 117.3
A 9 143 20564 170.37 581 571 117.3
A 13 6 14482 118.54 581 571 117.3
B 5 184 135751 1215.14 576 561 111.3
B 5 172 121061 1083.1 576 561 111.3
B 0 213 103053 921.24 576 561 111.3
C 1 23 540328 4211.33 551 556 128.2
C 0 10 404886 3154.61 551 556 128.2
C 15 214 213402 1660.64 551 556 128.2
D 2 250 221448 1628.03 556 541 135.7
D 2 153 165431 1215.2 556 541 135.7
D 2 249 64722 473.0 556 541 135.7

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