ASTROSAT CZTI

Data Quality Report

Orbit 01080

Creation date: 2024-06-27T14:07:36.953553
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/AS1P01_999T99_9000000194_01080cztM0_level2.evt modeM0/AS1P01_999T99_9000000194_01080cztM0_level2_quad_clean.evt
Size (bytes)82,814,4008,861,760
Size79.0 MB 8.5 MB
Events in quadrant A631,85654,926
Events in quadrant B695,24654,778
Events in quadrant C621,04054,827
Events in quadrant D516,79154,100

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023101
B024630
C022630
D019670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59100.000000%
B59140.676819%
C59100.000000%
D59100.000000%

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 591 591 4 4 0.68% 0.68%
B 591 591 15 15 2.54% 2.54%
C 591 591 4 4 0.68% 0.68%
D 591 591 0 0 0.00% 0.00%

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 3 111 557 9.42 164 166 41.5
A 14 203 428 6.31 164 166 41.5
A 13 235 419 6.09 164 166 41.5
B 5 184 14616 325.79 175 176 44.3
B 5 191 12505 278.16 175 176 44.3
B 4 232 2312 48.19 175 176 44.3
C 15 241 28079 636.18 150 155 43.9
C 3 111 1866 38.98 150 155 43.9
C 3 79 1295 25.97 150 155 43.9
D 13 13 998 19.1 137 140 44.9
D 15 13 453 6.97 137 140 44.9
D 13 169 417 6.17 137 140 44.9

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