ASTROSAT CZTI

Data Quality Report

Orbit 20231203_A13_074T03_9000005976_level2

Creation date: 2023-12-05T14:44:13.978834
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/AS1A13_074T03_9000005976cztM0_level2.fits modeM0/AS1A13_074T03_9000005976cztM0_level2_quad_clean.evt
Size (bytes)110,088,000101,643,840
Size105.0 MB 96.9 MB
Events in quadrant A641,134574,623
Events in quadrant B631,490583,208
Events in quadrant C654,474562,905
Events in quadrant D555,168505,477

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401210
B0267560
C0264080
D0320710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123205584.529221%
B123203192.589286%
C123202472.004870%
D123206765.487013%

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 14795 12319 0 0 0.00% 0.00%
B 14795 12318 0 0 0.00% 0.00%
C 14795 12319 0 0 0.00% 0.00%
D 14795 12307 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 15 236 499 7.75 166 156 44.2
A 7 110 499 7.75 166 156 44.2
A 0 30 495 7.66 166 156 44.2
B 2 9 608 12.36 166 157 36.5
B 2 8 491 9.15 166 157 36.5
B 3 17 435 7.62 166 157 36.5
C 3 203 498 7.33 173 161 46.0
C 3 202 492 7.2 173 161 46.0
C 1 81 467 6.66 173 161 46.0
D 6 79 434 6.33 159 145 45.6
D 3 14 398 5.54 159 145 45.6
D 10 189 397 5.52 159 145 45.6

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