ASTROSAT CZTI

Data Quality Report

Orbit 34866

Creation date: 2022-03-10T23:27:12.724750
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_005T01_9000004992_34866cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34866cztM0_level2_quad_clean.evt
Size (bytes)780,275,52081,705,600
Size744.1 MB 77.9 MB
Events in quadrant A2,907,881581,955
Events in quadrant B10,096,777465,403
Events in quadrant C3,153,768567,437
Events in quadrant D7,106,725478,459

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123403
B0337132
C0125952
D0248522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5419601.107215%
B5419334661.745710%
C54191132.085256%
D5419132124.377191%

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 7061 5420 44 44 0.62% 0.81%
B 7061 5420 2865 2865 40.57% 52.86%
C 7061 5420 104 104 1.47% 1.92%
D 7061 5420 1326 1326 18.78% 24.46%

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 418707 3306.74 622 609 126.4
A 10 83 57623 450.92 622 609 126.4
A 13 6 11854 88.94 622 609 126.4
B 5 31 4901792 49787.49 511 498 98.4
B 5 15 2541101 25807.52 511 498 98.4
B 5 172 327651 3323.23 511 498 98.4
C 0 207 297110 2155.13 593 597 137.6
C 0 10 268503 1947.21 593 597 137.6
C 15 214 229001 1660.1 593 597 137.6
D 12 227 3156357 23084.98 543 527 136.7
D 12 233 1078280 7883.79 543 527 136.7
D 8 195 452465 3305.94 543 527 136.7

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