ASTROSAT CZTI

Data Quality Report

Orbit 24989

Creation date: 2024-06-27T19:12:24.634459
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/AS1A07_127T03_9000003662_24989cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_24989cztM0_level2_quad_clean.evt
Size (bytes)600,860,16073,088,640
Size573.0 MB 69.7 MB
Events in quadrant A2,977,901466,743
Events in quadrant B3,215,236475,727
Events in quadrant C3,314,503452,966
Events in quadrant D8,267,812382,434

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128231
B0134591
C0136911
D0287584

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62232113.390648%
B62232443.920938%
C62232614.194119%
D6222170227.354548%

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 6393 6224 0 0 0.00% 0.00%
B 6393 6224 16 16 0.25% 0.26%
C 6393 6224 14 14 0.22% 0.22%
D 6392 6223 1446 1446 22.62% 23.24%

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 9 130 10254 60.8 768 749 156.3
A 13 254 10121 59.95 768 749 156.3
A 14 250 7599 43.82 768 749 156.3
B 5 172 59384 397.51 761 741 147.5
B 0 190 48444 323.35 761 741 147.5
B 3 64 47039 313.83 761 741 147.5
C 7 247 332028 1915.86 733 737 172.9
C 14 238 116313 668.38 733 737 172.9
C 3 233 7863 41.21 733 737 172.9
D 1 52 2646614 15940.55 683 663 166.0
D 7 238 2604647 15687.72 683 663 166.0
D 8 195 118358 709.05 683 663 166.0

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