ASTROSAT CZTI

Data Quality Report

Orbit 33834

Creation date: 2024-06-27T20:53:11.973817
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/AS1A11_106T03_9000004826_33834cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33834cztM0_level2_quad_clean.evt
Size (bytes)534,781,44081,446,400
Size510.0 MB 77.7 MB
Events in quadrant A2,862,148519,227
Events in quadrant B4,334,482501,733
Events in quadrant C3,632,830513,746
Events in quadrant D4,939,225491,585

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127853
B0171782
C0148802
D0190692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A630250.079340%
B63024176.616947%
C63021111.761346%
D63021903.014916%

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 8988 6304 0 0 0.00% 0.00%
B 8988 6304 302 302 3.36% 4.79%
C 8988 6304 92 92 1.02% 1.46%
D 8988 6304 149 149 1.66% 2.36%

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 13 6 27414 181.75 731 716 146.9
A 13 254 11568 73.88 731 716 146.9
A 10 83 10779 68.51 731 716 146.9
B 5 172 905172 6591.71 711 693 137.2
B 4 251 400609 2914.53 711 693 137.2
B 0 219 60513 435.96 711 693 137.2
C 15 214 268676 1652.38 704 709 162.2
C 0 10 254563 1565.35 704 709 162.2
C 3 233 100517 615.45 704 709 162.2
D 8 195 1362689 7861.62 704 683 173.2
D 12 6 219465 1262.83 704 683 173.2
D 2 249 177721 1021.88 704 683 173.2

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