ASTROSAT CZTI

Data Quality Report

Orbit 01135

Creation date: 2024-06-27T14:08:04.093851
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_01135cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01135cztM0_level2_quad_clean.evt
Size (bytes)1,184,492,160110,666,880
Size1.1 GB 105.5 MB
Events in quadrant A8,816,741723,205
Events in quadrant B9,187,471719,737
Events in quadrant C9,092,315696,827
Events in quadrant D8,282,658693,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314812
B0325551
C0322971
D0299661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A744740.053713%
B744770.093998%
C744790.120854%
D7447270.362562%

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 7842 7448 218 218 2.78% 2.93%
B 7842 7448 254 254 3.24% 3.41%
C 7842 7448 234 234 2.98% 3.14%
D 7842 7448 250 250 3.19% 3.36%

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 14 238 11215 16.14 2292 2307 551.8
A 0 175 10421 14.7 2292 2307 551.8
A 11 79 9383 12.82 2292 2307 551.8
B 15 22 22225 35.28 2391 2395 562.1
B 0 187 17487 26.85 2391 2395 562.1
B 8 4 16993 25.97 2391 2395 562.1
C 15 241 344729 554.19 2208 2287 617.9
C 0 236 60695 94.52 2208 2287 617.9
C 3 111 27437 40.7 2208 2287 617.9
D 2 16 140825 207.82 2138 2213 667.0
D 12 22 69904 101.49 2138 2213 667.0
D 13 252 38959 55.09 2138 2213 667.0

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