ASTROSAT CZTI

Data Quality Report

Orbit 11660

Creation date: 2024-06-27T16:16:34.911835
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_037T02_9000001718_11660cztM0_level2.evt modeM0/AS1A04_037T02_9000001718_11660cztM0_level2_quad_clean.evt
Size (bytes)1,451,983,680215,714,880
Size1.4 GB 205.7 MB
Events in quadrant A12,551,9051,334,606
Events in quadrant B8,810,9831,380,557
Events in quadrant C7,984,8291,338,138
Events in quadrant D13,412,2201,240,057

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496134
B0379973
C0363653
D0527143

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179807244.026696%
B179801240.689655%
C17980310.172414%
D1798015548.642937%

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 20141 17983 380 380 1.89% 2.11%
B 20141 17984 21 21 0.10% 0.12%
C 20141 17984 0 0 0.00% 0.00%
D 20141 17984 1259 1259 6.25% 7.00%

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 5 3017386 7178.95 2072 2030 420.0
A 1 162 579415 1374.64 2072 2030 420.0
A 1 178 344184 814.6 2072 2030 420.0
B 4 239 329465 802.36 2111 2055 408.1
B 15 204 101627 244.01 2111 2055 408.1
B 0 214 97820 234.68 2111 2055 408.1
C 13 61 14884 26.93 2046 2057 476.3
C 12 4 8383 13.28 2046 2057 476.3
C 8 128 5700 7.65 2046 2057 476.3
D 13 104 5200072 10923.68 1972 1918 475.9
D 10 199 288855 602.98 1972 1918 475.9
D 10 157 131729 272.79 1972 1918 475.9

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