ASTROSAT CZTI

Data Quality Report

Orbit 23502

Creation date: 2024-06-27T18:55:18.322977
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/AS1A07_100T02_9000003476_23502cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23502cztM0_level2_quad_clean.evt
Size (bytes)47,111,04013,322,880
Size44.9 MB 12.7 MB
Events in quadrant A308,36488,509
Events in quadrant B386,43388,964
Events in quadrant C327,02384,587
Events in quadrant D353,38383,824

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014150
B016100
C014640
D014960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70700.000000%
B70770.990099%
C70720.282885%
D70710.141443%

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 707 707 0 0 0.00% 0.00%
B 707 707 2 2 0.28% 0.28%
C 707 707 2 2 0.28% 0.28%
D 707 707 1 1 0.14% 0.14%

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 13 254 1453 74.46 79 77 18.5
A 3 137 746 36.19 79 77 18.5
A 0 226 686 32.94 79 77 18.5
B 0 189 55502 3085.0 80 78 18.0
B 15 36 6571 361.41 80 78 18.0
B 0 219 4443 242.96 80 78 18.0
C 14 238 12093 617.43 75 75 19.5
C 2 16 10690 545.35 75 75 19.5
C 0 207 6234 316.42 75 75 19.5
D 1 52 47528 2359.51 75 73 20.1
D 13 138 5856 287.54 75 73 20.1
D 2 234 3129 151.95 75 73 20.1

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