ASTROSAT CZTI

Data Quality Report

Orbit 34769

Creation date: 2022-03-04T08:56:05.821381
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/AS1C07_004T01_9000004990_34769cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34769cztM0_level2_quad_clean.evt
Size (bytes)561,746,88054,924,480
Size535.7 MB 52.4 MB
Events in quadrant A3,723,606325,809
Events in quadrant B2,993,519347,482
Events in quadrant C3,069,994341,542
Events in quadrant D6,871,281280,823

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141012
B0118031
C0121961
D0241041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52402665.076336%
B5240561.068702%
C5240270.515267%
D524091617.480916%

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 7273 5241 285 285 3.92% 5.44%
B 7273 5241 34 34 0.47% 0.65%
C 7273 5241 16 16 0.22% 0.31%
D 7273 5241 761 761 10.46% 14.52%

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 15 169 1051545 7926.64 667 655 132.6
A 10 83 47403 352.61 667 655 132.6
A 15 174 43452 322.81 667 655 132.6
B 5 255 95149 738.55 683 666 127.9
B 5 172 87117 675.76 683 666 127.9
B 0 190 63733 492.98 683 666 127.9
C 15 214 225039 1445.55 675 683 155.2
C 0 10 89479 572.12 675 683 155.2
C 14 67 76416 487.95 675 683 155.2
D 12 227 1580701 10297.09 625 608 153.5
D 2 250 1082762 7052.14 625 608 153.5
D 8 195 1054518 6868.08 625 608 153.5

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