ASTROSAT CZTI

Data Quality Report

Orbit 41200

Creation date: 2024-06-27T22:25:44.472550
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_101T02_9000005622_41200cztM0_level2.fits modeM0/AS1A12_101T02_9000005622_41200cztM0_level2_quad_clean.evt
Size (bytes)306,129,60087,647,040
Size291.9 MB 83.6 MB
Events in quadrant A2,702,436609,313
Events in quadrant B2,426,849626,551
Events in quadrant C2,978,554548,673
Events in quadrant D2,844,170527,438

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108353
B0103542
C0117232
D0117162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487080.164271%
B4870150.308008%
C48702515.154004%
D48701402.874743%

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 7023 4871 2 2 0.03% 0.04%
B 7023 4871 8 8 0.11% 0.16%
C 7023 4871 252 252 3.59% 5.17%
D 7023 4871 143 143 2.04% 2.94%

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 482173 4219.56 567 559 114.1
A 12 189 16785 142.16 567 559 114.1
A 13 254 8761 71.86 567 559 114.1
B 5 255 123534 1152.73 560 546 106.7
B 0 229 49755 461.22 560 546 106.7
B 0 190 46079 426.77 560 546 106.7
C 0 10 675171 5602.73 527 531 120.4
C 15 214 204074 1690.38 527 531 120.4
C 14 254 33740 275.79 527 531 120.4
D 13 249 270411 2064.57 542 528 130.7
D 2 249 223709 1707.31 542 528 130.7
D 12 16 143715 1095.36 542 528 130.7

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