ASTROSAT CZTI

Data Quality Report

Orbit 37881

Creation date: 2024-06-27T21:45:38.686925
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/AS1C07_001T12_9000005352_37881cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37881cztM0_level2_quad_clean.evt
Size (bytes)374,016,96099,786,240
Size356.7 MB 95.2 MB
Events in quadrant A2,652,049684,321
Events in quadrant B2,680,805691,400
Events in quadrant C2,557,845658,545
Events in quadrant D3,092,247633,306

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108533
B0112002
C0106172
D0124482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A505660.118671%
B5056681.344937%
C5056160.316456%
D5056741.463608%

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 6999 5057 2 2 0.03% 0.04%
B 6999 5057 41 41 0.59% 0.81%
C 6999 5056 10 10 0.14% 0.20%
D 6999 5056 53 53 0.76% 1.05%

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 10 83 313528 2619.9 597 588 119.4
A 9 143 15332 123.44 597 588 119.4
A 12 189 8540 66.57 597 588 119.4
B 5 172 232346 2110.12 586 573 109.8
B 0 213 110744 1003.03 586 573 109.8
B 12 111 13310 115.96 586 573 109.8
C 15 214 214539 1649.81 565 568 129.7
C 0 10 63814 487.66 565 568 129.7
C 12 249 40409 307.19 565 568 129.7
D 1 52 234693 1700.67 571 555 137.7
D 1 47 168684 1221.21 571 555 137.7
D 2 250 131283 949.55 571 555 137.7

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