ASTROSAT CZTI

Data Quality Report

Orbit 02078

Creation date: 2024-06-27T14:14:06.695285
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/AS1SLEW_01234_9000000321_02078cztM0_level2.evt modeM0/AS1SLEW_01234_9000000321_02078cztM0_level2_quad_clean.evt
Size (bytes)194,806,0803,617,280
Size185.8 MB 3.4 MB
Events in quadrant A1,564,8265,479
Events in quadrant B1,597,2735,365
Events in quadrant C1,329,2625,350
Events in quadrant D1,328,9315,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054600
B055670
C047710
D047910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1154100.866551%
B115420.173310%
C1154151.299827%
D1154574.939341%

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 1154 1154 168 168 14.56% 14.56%
B 1154 1154 82 82 7.11% 7.11%
C 1154 1154 28 28 2.43% 2.43%
D 1154 1154 83 83 7.19% 7.19%

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 0 199 297376 3633.23 331 333 81.8
A -1 -1 -1 -1.0 331 333 81.8
A -1 -1 -1 -1.0 331 333 81.8
B 5 68 209131 2445.14 359 361 85.4
B 4 48 18910 217.25 359 361 85.4
B 8 3 8302 93.01 359 361 85.4
C 10 82 55110 604.11 321 333 90.7
C 14 223 16867 182.35 321 333 90.7
C 10 65 1678 14.83 321 333 90.7
D 2 32 252003 2771.17 287 295 90.8
D 13 88 4280 43.87 287 295 90.8
D 7 85 1193 9.89 287 295 90.8

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