ASTROSAT CZTI

Data Quality Report

Orbit 39070

Creation date: 2024-06-27T22:00:01.838986
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/AS1T05_067T01_9000005432_39070cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39070cztM0_level2_quad_clean.evt
Size (bytes)510,338,88095,526,720
Size486.7 MB 91.1 MB
Events in quadrant A4,086,057659,366
Events in quadrant B2,570,548715,732
Events in quadrant C3,758,702649,563
Events in quadrant D8,059,253492,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158593
B0109662
C0146262
D0277242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53723847.148176%
B537250.093075%
C53722184.058079%
D5372126423.529412%

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 7465 5373 233 233 3.12% 4.34%
B 7465 5373 1 1 0.01% 0.02%
C 7465 5373 128 128 1.71% 2.38%
D 7465 5373 1450 1450 19.42% 26.99%

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 1059055 8298.39 632 619 127.5
A 10 83 419947 3287.63 632 619 127.5
A 15 223 130052 1014.79 632 619 127.5
B 0 190 41287 330.38 642 628 123.1
B 12 111 15044 117.14 642 628 123.1
B 11 111 13605 105.45 642 628 123.1
C 15 208 1076628 7679.11 605 611 140.1
C 15 214 223808 1592.87 605 611 140.1
C 3 233 93048 659.69 605 611 140.1
D 12 235 5067879 35885.12 579 562 141.2
D 12 233 314046 2219.99 579 562 141.2
D 2 249 168120 1186.59 579 562 141.2

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