ASTROSAT CZTI

Data Quality Report

Orbit 20190817_A05_225T02_9000003100_level2

Creation date: 2025-12-03T03:07:04.882240
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_225T02_9000003100cztM0_level2.fits modeM0/AS1A05_225T02_9000003100cztM0_level2_quad_clean.evt
Size (bytes)140,382,720153,884,160
Size133.9 MB 146.8 MB
Events in quadrant A853,000945,848
Events in quadrant B818,640955,370
Events in quadrant C845,498935,458
Events in quadrant D705,602794,892

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304420
B0334870
C0307150
D0440250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14917990.663672%
B149172001.340752%
C149171771.186566%
D1491712278.225515%

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 17492 14917 0 0 0.00% 0.00%
B 17492 14917 0 0 0.00% 0.00%
C 17492 14917 0 0 0.00% 0.00%
D 17492 14913 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 29 827 10.65 222 208 58.1
A 7 110 717 8.75 222 208 58.1
A 0 30 667 7.89 222 208 58.1
B 2 9 629 9.43 216 207 44.7
B 3 17 591 8.58 216 207 44.7
B 5 128 518 6.95 216 207 44.7
C 12 241 635 7.16 223 208 59.6
C 3 126 590 6.41 223 208 59.6
C 2 191 586 6.34 223 208 59.6
D 4 246 533 6.42 201 183 54.5
D 3 14 516 6.11 201 183 54.5
D 6 231 512 6.03 201 183 54.5

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