ASTROSAT CZTI

Data Quality Report

Orbit 20240828_C09_008T01_9000006420_level2

Creation date: 2024-08-29T15:00:12.901991
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/AS1C09_008T01_9000006420cztM0_level2.fits modeM0/AS1C09_008T01_9000006420cztM0_level2_quad_clean.evt
Size (bytes)125,153,280115,381,440
Size119.4 MB 110.0 MB
Events in quadrant A728,776651,078
Events in quadrant B721,926668,228
Events in quadrant C742,784640,395
Events in quadrant D639,482576,815

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0551600
B0318180
C0292350
D0364080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138545533.991627%
B138552521.818838%
C138551771.277517%
D138553912.822086%

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 16079 13852 0 0 0.00% 0.00%
B 16080 13853 0 0 0.00% 0.00%
C 16080 13853 0 0 0.00% 0.00%
D 16080 13853 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 7 110 591 8.24 190 178 50.1
A 15 236 584 8.1 190 178 50.1
A 0 29 558 7.58 190 178 50.1
B 2 9 678 12.52 191 182 39.6
B 2 8 567 9.72 191 182 39.6
B 3 17 521 8.56 191 182 39.6
C 3 202 578 7.5 196 183 52.6
C 1 81 577 7.48 196 183 52.6
C 3 203 560 7.16 196 183 52.6
D 10 189 523 6.81 183 166 52.4
D 4 12 469 5.78 183 166 52.4
D 6 38 466 5.72 183 166 52.4

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