ASTROSAT CZTI

Data Quality Report

Orbit 41270

Creation date: 2024-06-27T22:26:48.576414
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_052T04_9000005638_41270cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41270cztM0_level2_quad_clean.evt
Size (bytes)378,630,72096,863,040
Size361.1 MB 92.4 MB
Events in quadrant A3,128,882652,975
Events in quadrant B2,856,322673,849
Events in quadrant C3,216,209637,290
Events in quadrant D4,376,976575,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126333
B0123742
C0129352
D0168222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5618641.139195%
B5618490.872197%
C56181372.438590%
D56183386.016376%

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 9356 5620 46 46 0.49% 0.82%
B 9356 5620 31 31 0.33% 0.55%
C 9356 5620 116 116 1.24% 2.06%
D 9356 5620 337 337 3.60% 6.00%

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 531184 4158.74 627 614 127.6
A 13 248 153042 1194.77 627 614 127.6
A 13 6 12823 95.69 627 614 127.6
B 0 186 265306 2194.8 626 607 120.6
B 0 190 48718 398.92 626 607 120.6
B 5 255 44160 361.12 626 607 120.6
C 0 10 354058 2441.86 623 627 144.7
C 15 214 237218 1634.61 623 627 144.7
C 9 54 183089 1260.63 623 627 144.7
D 2 120 961411 6460.69 611 598 148.7
D 1 52 667360 4483.43 611 598 148.7
D 5 222 149020 998.02 611 598 148.7

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