ASTROSAT CZTI

Data Quality Report

Orbit 39807

Creation date: 2024-06-27T22:09:10.116849
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/AS1A12_022T01_9000005498_39807cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39807cztM0_level2_quad_clean.evt
Size (bytes)439,761,60085,296,960
Size419.4 MB 81.3 MB
Events in quadrant A2,943,921616,679
Events in quadrant B2,613,274621,205
Events in quadrant C7,443,188448,530
Events in quadrant D2,884,752541,535

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180369
B01107566
C025883254
D01192848

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01042
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5068240.473560%
B5064561.105845%
C5037138127.417113%
D5076611.201734%

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 7041 5091 10 10 0.14% 0.20%
B 7041 5088 38 38 0.54% 0.75%
C 7041 5071 1319 1319 18.73% 26.01%
D 7041 5095 57 57 0.81% 1.12%

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 10 83 433187 3673.44 585 575 117.8
A 13 248 97666 824.43 585 575 117.8
A 9 143 79586 670.91 585 575 117.8
B 5 172 214933 1948.14 570 554 110.0
B 4 171 62541 563.3 570 554 110.0
B 0 190 28335 252.46 570 554 110.0
C 9 187 4106156 35773.52 497 500 114.8
C 15 208 1162685 10126.38 497 500 114.8
C 15 214 194301 1688.63 497 500 114.8
D 12 227 305407 2236.38 562 545 136.3
D 2 249 167302 1223.28 562 545 136.3
D 13 249 157149 1148.8 562 545 136.3

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