ASTROSAT CZTI

Data Quality Report

Orbit 12507

Creation date: 2024-06-27T16:28:24.141814
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/AS1T01_218T01_9000001852_12507cztM0_level2.evt modeM0/AS1T01_218T01_9000001852_12507cztM0_level2_quad_clean.evt
Size (bytes)456,045,12094,613,760
Size434.9 MB 90.2 MB
Events in quadrant A3,310,455603,346
Events in quadrant B3,432,812620,129
Events in quadrant C3,096,243602,779
Events in quadrant D3,516,307571,970

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141353
B0145822
C0138532
D0152212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6695831.239731%
B66951291.926811%
C6695260.388350%
D6695660.985810%

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 7821 6697 1 1 0.01% 0.01%
B 7821 6697 16 16 0.20% 0.24%
C 7821 6697 0 0 0.00% 0.00%
D 7821 6697 49 49 0.63% 0.73%

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 1 162 53490 317.97 818 799 165.7
A 1 178 30499 179.23 818 799 165.7
A 12 189 28493 167.12 818 799 165.7
B 4 239 151532 965.35 819 799 156.1
B 0 214 24409 151.21 819 799 156.1
B 3 64 19382 119.01 819 799 156.1
C 3 233 9726 48.86 790 795 182.8
C 14 234 9498 47.61 790 795 182.8
C 13 61 5937 28.13 790 795 182.8
D 1 52 210337 1132.76 779 758 185.0
D 13 104 138781 746.01 779 758 185.0
D 1 255 134850 724.76 779 758 185.0

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