ASTROSAT CZTI

Data Quality Report

Orbit 37376

Creation date: 2024-06-27T21:39:11.240966
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/AS1T05_048T01_9000005318_37376cztM0_level2.evt modeM0/AS1T05_048T01_9000005318_37376cztM0_level2_quad_clean.evt
Size (bytes)622,382,40046,897,920
Size593.6 MB 44.7 MB
Events in quadrant A2,928,176285,832
Events in quadrant B3,689,408277,261
Events in quadrant C3,998,544281,854
Events in quadrant D7,882,100210,172

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115943
B0140282
C0149492
D0270642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5183290.559522%
B51834248.180590%
C51833186.135443%
D5183153129.538877%

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 7276 5184 23 23 0.32% 0.44%
B 7276 5183 278 278 3.82% 5.36%
C 7276 5184 299 299 4.11% 5.77%
D 7276 5184 1393 1393 19.15% 26.87%

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 10 83 275177 2095.38 652 639 131.0
A 13 248 91004 689.7 652 639 131.0
A 9 143 22784 169.02 652 639 131.0
B 5 255 527087 4511.77 626 613 116.7
B 0 190 368066 3149.0 626 613 116.7
B 5 172 123140 1050.03 626 613 116.7
C 1 23 1030968 7188.47 630 637 143.3
C 15 214 216473 1505.86 630 637 143.3
C 14 254 159896 1111.13 630 637 143.3
D 12 235 4775425 33455.09 584 569 142.7
D 2 249 533429 3733.49 584 569 142.7
D 12 227 215592 1506.56 584 569 142.7

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