ASTROSAT CZTI

Data Quality Report

Orbit 01267

Creation date: 2024-06-27T14:10:05.932363
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_011T02_9000000226_01267cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01267cztM0_level2_quad_clean.evt
Size (bytes)1,387,768,32088,493,760
Size1.3 GB 84.4 MB
Events in quadrant A7,778,504618,674
Events in quadrant B8,779,336608,430
Events in quadrant C7,445,636598,819
Events in quadrant D17,605,205407,422

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276582
B0306031
C0266771
D0574471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6368410.643844%
B63681382.167085%
C6368180.282663%
D6368418365.687814%

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 7048 6368 264 264 3.75% 4.15%
B 7047 6367 594 594 8.43% 9.33%
C 7048 6368 124 124 1.76% 1.95%
D 7047 6367 5547 5547 78.71% 87.12%

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 180582 380.92 1946 1960 468.9
A 8 14 75940 157.77 1946 1960 468.9
A 10 2 20990 40.58 1946 1960 468.9
B 8 4 617203 1292.21 2015 2026 476.1
B 6 53 191986 399.02 2015 2026 476.1
B 15 22 96807 199.09 2015 2026 476.1
C 15 241 295677 578.86 1809 1874 507.6
C 3 79 42080 79.21 1809 1874 507.6
C 3 111 29293 54.02 1809 1874 507.6
D 13 169 8381984 20597.07 1315 1359 406.9
D 12 22 3729646 9163.01 1315 1359 406.9
D 10 84 311278 761.69 1315 1359 406.9

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