ASTROSAT CZTI

Data Quality Report

Orbit 26403

Creation date: 2024-06-27T19:28:35.271552
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/AS1A09_127T01_9000003816_26403cztM0_level2.evt modeM0/AS1A09_127T01_9000003816_26403cztM0_level2_quad_clean.evt
Size (bytes)535,645,44092,062,080
Size510.8 MB 87.8 MB
Events in quadrant A3,197,769602,537
Events in quadrant B3,528,417620,857
Events in quadrant C5,830,814551,676
Events in quadrant D3,239,497574,893

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133410
B0143660
C0214490
D0137150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6278641.019433%
B62781302.070723%
C627899915.912711%
D6278510.812361%

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 7573 6279 14 14 0.18% 0.22%
B 7573 6279 24 24 0.32% 0.38%
C 7572 6278 562 562 7.42% 8.95%
D 7573 6279 9 9 0.12% 0.14%

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 91604 570.6 805 790 159.2
A 13 254 10764 62.67 805 790 159.2
A 0 226 6970 38.83 805 790 159.2
B 0 189 127332 851.95 813 796 148.5
B 5 172 126877 848.89 813 796 148.5
B 0 244 38951 256.89 813 796 148.5
C 2 16 1977380 11609.2 739 747 170.3
C 3 233 841747 4939.38 739 747 170.3
C 14 238 119891 699.76 739 747 170.3
D 1 52 199963 1083.62 782 764 183.8
D 12 233 32774 174.13 782 764 183.8
D 2 234 32189 170.95 782 764 183.8

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