ASTROSAT CZTI

Data Quality Report

Orbit 27772

Creation date: 2024-06-27T19:44:11.584915
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/AS1A09_038T40_9000004012_27772cztM0_level2.evt modeM0/AS1A09_038T40_9000004012_27772cztM0_level2_quad_clean.evt
Size (bytes)176,316,48048,784,320
Size168.1 MB 46.5 MB
Events in quadrant A1,210,226332,674
Events in quadrant B1,310,564338,001
Events in quadrant C1,338,000319,021
Events in quadrant D1,315,701315,013

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091
B090
C090
D091

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050240
B053350
C055010
D053680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2364261.099831%
B2368331.393581%
C2376572.398990%
D2365271.141649%

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 3606 2577 0 0 0.00% 0.00%
B 3569 2561 0 0 0.00% 0.00%
C 3603 2554 0 0 0.00% 0.00%
D 3606 2575 10 10 0.28% 0.39%

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 13 254 4301 62.43 313 306 64.0
A 3 137 2791 38.83 313 306 64.0
A 0 226 2662 36.82 313 306 64.0
B 3 64 70005 1132.43 310 301 61.6
B 0 190 12584 199.55 310 301 61.6
B 12 111 7246 112.83 310 301 61.6
C 3 233 103720 1442.97 301 302 71.7
C 14 238 49171 681.86 301 302 71.7
C 6 112 6738 89.8 301 302 71.7
D 1 52 119569 1603.87 306 297 74.4
D 2 250 18578 245.83 306 297 74.4
D 2 234 9951 129.82 306 297 74.4

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