ASTROSAT CZTI

Data Quality Report

Orbit 25981

Creation date: 2024-06-27T19:22:48.196116
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_068T01_9000003756_25981cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25981cztM0_level2_quad_clean.evt
Size (bytes)134,308,80014,952,960
Size128.1 MB 14.3 MB
Events in quadrant A956,73686,060
Events in quadrant B927,98587,687
Events in quadrant C966,53579,691
Events in quadrant D1,106,40081,924

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040340
B038620
C040480
D044060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134
B0145
C0124
D0136

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1499171.134089%
B1505150.996678%
C1503432.860945%
D1500614.066667%

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 3829 1558 0 0 0.00% 0.00%
B 3876 1562 0 0 0.00% 0.00%
C 3692 1554 0 0 0.00% 0.00%
D 3869 1547 54 54 1.40% 3.49%

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 10 229 7371 143.79 246 242 49.6
A 0 226 2089 37.25 246 242 49.6
A 13 254 2003 35.52 246 242 49.6
B 12 111 5044 104.84 237 232 45.9
B 11 111 4758 98.61 237 232 45.9
B 14 111 4513 93.27 237 232 45.9
C 14 238 37754 700.69 230 231 53.6
C 3 233 18323 337.84 230 231 53.6
C 0 207 12142 222.42 230 231 53.6
D 12 233 155059 2712.11 237 231 57.1
D 1 52 49126 856.49 237 231 57.1
D 2 234 4268 70.72 237 231 57.1

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