ASTROSAT CZTI

Data Quality Report

Orbit 39899

Creation date: 2024-06-27T22:10:06.795502
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/AS1A12_044T09_9000005506_39899cztM0_level2.fits modeM0/AS1A12_044T09_9000005506_39899cztM0_level2_quad_clean.evt
Size (bytes)340,297,92090,331,200
Size324.5 MB 86.1 MB
Events in quadrant A3,030,098614,646
Events in quadrant B2,836,615618,866
Events in quadrant C2,650,198590,320
Events in quadrant D3,653,368528,542

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123652
B0119371
C0111921
D0145801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5472340.621345%
B5472410.749269%
C5472160.292398%
D54723195.829678%

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 7175 5473 21 21 0.29% 0.38%
B 7175 5473 28 28 0.39% 0.51%
C 7175 5473 12 12 0.17% 0.22%
D 7175 5473 278 278 3.87% 5.08%

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 497287 3955.3 614 601 125.6
A 2 79 55489 437.09 614 601 125.6
A 7 3 41124 322.7 614 601 125.6
B 0 230 145662 1222.94 609 592 118.6
B 5 255 122203 1025.18 609 592 118.6
B 15 85 50257 418.68 609 592 118.6
C 15 214 228966 1627.05 597 601 140.4
C 0 10 33087 231.46 597 601 140.4
C 14 254 17932 123.48 597 601 140.4
D 13 249 608723 4169.8 586 568 145.8
D 1 47 388244 2658.09 586 568 145.8
D 12 227 159685 1090.98 586 568 145.8

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