ASTROSAT CZTI

Data Quality Report

Orbit 17681

Creation date: 2024-06-27T17:39:26.280542
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/AS1A05_208T01_9000002614_17681cztM0_level2.evt modeM0/AS1A05_208T01_9000002614_17681cztM0_level2_quad_clean.evt
Size (bytes)218,854,08020,949,120
Size208.7 MB 20.0 MB
Events in quadrant A1,409,545106,734
Events in quadrant B1,588,427107,568
Events in quadrant C1,618,455104,828
Events in quadrant D1,809,546104,331

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060490
B065750
C066940
D074000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A294130.102006%
B2941461.564094%
C2941180.612037%
D2942491.665534%

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 2941 2941 0 0 0.00% 0.00%
B 2941 2941 28 28 0.95% 0.95%
C 2941 2941 0 0 0.00% 0.00%
D 2942 2942 31 31 1.05% 1.05%

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 14 237 89973 1241.63 342 334 72.2
A 0 226 2996 36.87 342 334 72.2
A 3 137 2683 32.54 342 334 72.2
B 7 220 134520 2014.86 340 332 66.6
B 10 245 37169 553.12 340 332 66.6
B 0 229 34203 508.58 340 332 66.6
C 3 233 277105 3536.86 327 329 78.3
C 14 238 50638 642.89 327 329 78.3
C 5 218 13967 174.28 327 329 78.3
D 7 238 534398 6424.63 332 322 83.1
D 2 234 14172 166.61 332 322 83.1
D 10 70 8702 100.81 332 322 83.1

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