ASTROSAT CZTI

Data Quality Report

Orbit 20181005_A05_149T04_9000002410_level2

Creation date: 2025-11-25T01:30:04.429976
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/AS1A05_149T04_9000002410cztM0_level2.fits modeM0/AS1A05_149T04_9000002410cztM0_level2_quad_clean.evt
Size (bytes)129,147,840102,712,320
Size123.2 MB 98.0 MB
Events in quadrant A769,338510,736
Events in quadrant B679,594489,906
Events in quadrant C787,784586,578
Events in quadrant D686,254535,467

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0384680
B0518740
C0299900
D0314560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1428811908.328667%
B14288293820.562710%
C142881611.126820%
D142881441.007839%

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 16583 14288 0 0 0.00% 0.00%
B 16583 14233 0 0 0.00% 0.00%
C 16583 14288 0 0 0.00% 0.00%
D 16583 14287 0 0 0.00% 0.00%

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 0 29 732 10.5 200 188 51.8
A 7 110 659 9.09 200 188 51.8
A 0 30 610 8.14 200 188 51.8
B 2 9 518 9.21 179 171 37.7
B 14 254 459 7.65 179 171 37.7
B 3 17 455 7.54 179 171 37.7
C 1 81 651 8.2 207 193 55.9
C 1 80 621 7.66 207 193 55.9
C 12 241 539 6.19 207 193 55.9
D 13 238 530 6.53 195 177 54.0
D 6 231 515 6.26 195 177 54.0
D 3 14 508 6.13 195 177 54.0

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