ASTROSAT CZTI

Data Quality Report

Orbit 24278

Creation date: 2024-06-27T19:04:16.536589
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/AS1C05_007T01_9000003588_24278cztM0_level2.evt modeM0/AS1C05_007T01_9000003588_24278cztM0_level2_quad_clean.evt
Size (bytes)715,504,32087,609,600
Size682.4 MB 83.6 MB
Events in quadrant A3,864,763539,513
Events in quadrant B3,913,287550,331
Events in quadrant C7,088,418510,022
Events in quadrant D6,273,883508,627

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164232
B0164392
C0269022
D0238362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78252032.594249%
B78252182.785942%
C78256368.127796%
D78255246.696486%

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 8065 7825 0 0 0.00% 0.00%
B 8065 7825 0 0 0.00% 0.00%
C 8065 7825 199 199 2.47% 2.54%
D 8065 7825 308 308 3.82% 3.94%

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 11305 50.92 1003 981 202.7
A 3 137 9248 40.78 1003 981 202.7
A 0 226 8730 38.22 1003 981 202.7
B 12 111 24099 118.61 993 966 195.0
B 11 111 21590 105.75 993 966 195.0
B 14 111 19392 94.48 993 966 195.0
C 7 247 1880175 8355.91 949 956 224.9
C 2 16 1243641 5525.58 949 956 224.9
C 14 238 145673 643.48 949 956 224.9
D 1 52 1452953 6116.01 965 938 237.4
D 8 195 1062331 4470.68 965 938 237.4
D 12 233 62265 258.31 965 938 237.4

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