ASTROSAT CZTI

Data Quality Report

Orbit 37458

Creation date: 2024-06-27T21:40:15.557940
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/AS1A11_027T01_9000005324_37458cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37458cztM0_level2_quad_clean.evt
Size (bytes)575,400,96097,531,200
Size548.7 MB 93.0 MB
Events in quadrant A4,101,186650,100
Events in quadrant B3,303,765669,994
Events in quadrant C4,210,185640,699
Events in quadrant D5,446,699614,952

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158903
B0133642
C0159212
D0199952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5395420.778499%
B5395901.668211%
C53954738.767377%
D53952334.318814%

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 7098 5396 16 16 0.23% 0.30%
B 7098 5396 54 54 0.76% 1.00%
C 7098 5396 438 438 6.17% 8.12%
D 7098 5396 253 253 3.56% 4.69%

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 15 222 883021 7268.55 598 587 121.4
A 15 174 517231 4255.56 598 587 121.4
A 10 83 299025 2458.22 598 587 121.4
B 4 171 477172 4158.82 598 583 114.6
B 0 189 104049 902.87 598 583 114.6
B 0 213 77212 668.68 598 583 114.6
C 14 254 1485979 11202.94 568 571 132.6
C 15 214 223863 1684.07 568 571 132.6
C 0 10 190855 1435.12 568 571 132.6
D 12 227 1651087 11738.4 573 556 140.6
D 12 235 950132 6753.28 573 556 140.6
D 2 249 231391 1641.67 573 556 140.6

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