ASTROSAT CZTI

Data Quality Report

Orbit 39172

Creation date: 2024-06-27T22:01:22.090862
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_054T02_9000005444_39172cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39172cztM0_level2_quad_clean.evt
Size (bytes)441,527,04096,140,160
Size421.1 MB 91.7 MB
Events in quadrant A3,098,697691,877
Events in quadrant B2,510,797697,288
Events in quadrant C2,807,080643,151
Events in quadrant D7,520,909512,710

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124522
B0106291
C0113101
D0260271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5232200.382263%
B523240.076453%
C5232330.630734%
D5232108020.642202%

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 7355 5233 8 8 0.11% 0.15%
B 7355 5233 0 0 0.00% 0.00%
C 7355 5233 26 26 0.35% 0.50%
D 7355 5233 1017 1017 13.83% 19.43%

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 433338 3385.78 633 623 127.8
A 13 248 155386 1210.94 633 623 127.8
A 2 79 54599 422.34 633 623 127.8
B 0 213 29365 243.45 622 606 118.1
B 5 172 23743 195.86 622 606 118.1
B 12 111 13572 109.76 622 606 118.1
C 15 214 220822 1582.34 605 607 139.2
C 9 187 216823 1553.61 605 607 139.2
C 0 10 5564 35.62 605 607 139.2
D 12 235 3888825 27726.74 576 561 140.2
D 2 249 758802 5406.92 576 561 140.2
D 13 171 180484 1283.01 576 561 140.2

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