ASTROSAT CZTI

Data Quality Report

Orbit 12771

Creation date: 2024-06-27T16:32:04.851999
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/AS1A04_110T04_9000001886_12771cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12771cztM0_level2_quad_clean.evt
Size (bytes)592,329,600146,517,120
Size564.9 MB 139.7 MB
Events in quadrant A3,702,842986,316
Events in quadrant B4,593,554985,584
Events in quadrant C3,655,160982,484
Events in quadrant D5,433,575916,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168823
B0192632
C0168472
D0218932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8156410.502697%
B81562953.616969%
C8156460.564002%
D81564115.039235%

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 8822 8161 0 0 0.00% 0.00%
B 8822 8161 153 153 1.73% 1.87%
C 8822 8161 1 1 0.01% 0.01%
D 8822 8161 236 236 2.68% 2.89%

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 8 15 19846 97.29 951 926 194.5
A 8 6 11158 52.61 951 926 194.5
A 0 226 8529 39.1 951 926 194.5
B 4 239 678480 3809.2 943 919 177.9
B 3 209 41833 230.02 943 919 177.9
B 0 219 34213 187.18 943 919 177.9
C 15 208 27405 122.67 930 931 215.8
C 13 61 6834 27.35 930 931 215.8
C 14 234 2620 7.83 930 931 215.8
D 1 52 1466953 6713.6 904 877 218.4
D 13 104 146157 665.28 904 877 218.4
D 8 195 100808 457.61 904 877 218.4

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