ASTROSAT CZTI

Data Quality Report

Orbit 01148

Creation date: 2024-06-27T14:08:15.365291
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/AS1P01_997T03_9000000216_01148cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01148cztM0_level2_quad_clean.evt
Size (bytes)1,198,186,560103,677,120
Size1.1 GB 98.9 MB
Events in quadrant A8,498,348690,049
Events in quadrant B9,008,054685,097
Events in quadrant C9,363,793655,668
Events in quadrant D8,953,334620,649

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302552
B0317201
C0328071
D0316601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7017100.142511%
B7017330.470286%
C7017350.498789%
D70175007.125552%

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 7042 7018 335 335 4.76% 4.77%
B 7042 7018 416 416 5.91% 5.93%
C 7042 7018 538 538 7.64% 7.67%
D 7042 7018 786 786 11.16% 11.20%

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 14 5 70157 128.18 2195 2209 530.1
A 11 79 8780 12.39 2195 2209 530.1
A 12 243 7352 9.7 2195 2209 530.1
B 6 53 152658 278.71 2283 2292 539.5
B 15 22 53019 94.02 2283 2292 539.5
B 8 4 34480 59.66 2283 2292 539.5
C 12 206 655954 1103.62 2112 2186 592.4
C 15 241 337397 565.87 2112 2186 592.4
C 9 83 57276 93.0 2112 2186 592.4
D 2 16 1312341 2149.47 1967 2037 609.6
D 13 252 85402 136.75 1967 2037 609.6
D 2 107 82176 131.46 1967 2037 609.6

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