ASTROSAT CZTI

Data Quality Report

Orbit 10740

Creation date: 2024-06-27T16:03:09.029566
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/AS1A03_078T01_9000001546_10740cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10740cztM0_level2_quad_clean.evt
Size (bytes)626,279,04095,126,400
Size597.3 MB 90.7 MB
Events in quadrant A4,159,533610,661
Events in quadrant B5,373,874612,218
Events in quadrant C3,323,214631,722
Events in quadrant D5,672,691574,925

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165423
B0203842
C0139872
D0213992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64634667.210274%
B646376811.883026%
C64631111.717469%
D64635568.602816%

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 9103 6465 326 326 3.58% 5.04%
B 9103 6465 417 417 4.58% 6.45%
C 9103 6465 0 0 0.00% 0.00%
D 9103 6465 347 347 3.81% 5.37%

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 15 239 855768 5044.76 832 817 169.5
A 13 251 35279 203.35 832 817 169.5
A 14 254 31362 180.24 832 817 169.5
B 4 239 2003808 12693.52 829 812 157.8
B 15 204 42853 266.43 829 812 157.8
B 0 197 39545 245.46 829 812 157.8
C 13 61 6217 27.26 851 856 196.6
C 8 222 2728 9.52 851 856 196.6
C 14 234 2489 8.3 851 856 196.6
D 2 16 922305 4699.51 820 799 196.1
D 1 52 497094 2531.02 820 799 196.1
D 7 71 273748 1391.99 820 799 196.1

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