ASTROSAT CZTI

Data Quality Report

Orbit 39325

Creation date: 2024-06-27T22:03:15.537247
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_061T07_9000005468_39325cztM0_level2.fits modeM0/AS1A12_061T07_9000005468_39325cztM0_level2_quad_clean.evt
Size (bytes)404,248,32093,723,840
Size385.5 MB 89.4 MB
Events in quadrant A2,967,530637,855
Events in quadrant B3,630,836633,206
Events in quadrant C2,782,741614,062
Events in quadrant D5,139,149553,725

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124493
B0146762
C0119102
D0192412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5706250.438135%
B57062434.258675%
C570660.105152%
D57063035.310200%

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 7228 5707 10 10 0.14% 0.18%
B 7228 5707 171 171 2.37% 3.00%
C 7228 5707 0 0 0.00% 0.00%
D 7228 5707 317 317 4.39% 5.55%

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 426520 3319.01 632 619 128.3
A 13 248 73442 567.5 632 619 128.3
A 15 222 26307 200.18 632 619 128.3
B 5 172 1123453 9245.32 622 605 121.5
B 0 213 44188 358.85 622 605 121.5
B 12 111 15622 123.65 622 605 121.5
C 15 214 260552 1788.81 616 620 145.3
C 9 187 90100 615.79 616 620 145.3
C 14 254 14822 97.74 616 620 145.3
D 12 235 2049039 13779.08 601 584 148.7
D 5 222 314275 2110.07 601 584 148.7
D 13 249 273882 1838.36 601 584 148.7

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