ASTROSAT CZTI

Data Quality Report

Orbit 01294

Creation date: 2024-06-27T14:10:32.399479
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/AS1G04_002T02_9000000230_01294cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01294cztM0_level2_quad_clean.evt
Size (bytes)1,366,032,96099,230,400
Size1.3 GB 94.6 MB
Events in quadrant A8,415,988655,194
Events in quadrant B9,574,298653,828
Events in quadrant C8,200,433635,888
Events in quadrant D14,735,696588,511

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298222
B0332221
C0291501
D0485601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6768921.359338%
B6768731.078605%
C6768490.723995%
D676871910.623522%

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 6958 6769 390 390 5.61% 5.76%
B 6958 6769 745 745 10.71% 11.01%
C 6958 6768 261 261 3.75% 3.86%
D 6958 6768 3895 3895 55.98% 57.55%

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 4 32 294008 570.89 2115 2130 511.3
A 11 79 8257 11.98 2115 2130 511.3
A 3 111 6453 8.46 2115 2130 511.3
B 8 4 852409 1646.71 2189 2197 516.3
B 12 52 179801 343.99 2189 2197 516.3
B 6 53 106259 201.55 2189 2197 516.3
C 15 241 308131 545.64 2000 2070 560.9
C 3 79 38763 65.42 2000 2070 560.9
C 3 111 29707 49.27 2000 2070 560.9
D 13 169 7041258 11728.1 1921 1987 600.2
D 10 84 375466 622.25 1921 1987 600.2
D 2 88 44526 70.87 1921 1987 600.2

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