ASTROSAT CZTI

Data Quality Report

Orbit 30171

Creation date: 2024-06-27T20:11:48.162920
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/AS1A10_021T06_9000004338_30171cztM0_level2.evt modeM0/AS1A10_021T06_9000004338_30171cztM0_level2_quad_clean.evt
Size (bytes)793,923,84086,564,160
Size757.1 MB 82.6 MB
Events in quadrant A4,089,358535,474
Events in quadrant B6,139,519533,627
Events in quadrant C9,018,955486,962
Events in quadrant D4,260,094512,808

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172371
B0241521
C0325191
D0175821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79473444.328677%
B79484535.699547%
C7947116814.697370%
D79472483.120674%

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 7962 7948 24 24 0.30% 0.30%
B 7963 7949 1 1 0.01% 0.01%
C 7962 7948 290 290 3.64% 3.65%
D 7962 7948 45 45 0.57% 0.57%

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 13 232040 1143.11 1000 975 202.1
A 13 254 13795 63.42 1000 975 202.1
A 3 137 10454 46.89 1000 975 202.1
B 6 159 2217565 11493.63 981 952 192.9
B 6 36 60520 308.87 981 952 192.9
B 12 111 24470 121.94 981 952 192.9
C 3 233 5137856 23424.52 931 937 219.3
C 14 238 148145 671.27 931 937 219.3
C 15 208 91447 412.73 931 937 219.3
D 1 52 256725 1080.79 971 945 236.7
D 8 195 167966 705.74 971 945 236.7
D 2 250 63401 263.91 971 945 236.7

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