ASTROSAT CZTI

Data Quality Report

Orbit 40198

Creation date: 2024-06-27T22:13:29.420266
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_053T01_9000005530_40198cztM0_level2.fits modeM0/AS1A12_053T01_9000005530_40198cztM0_level2_quad_clean.evt
Size (bytes)331,634,88092,759,040
Size316.3 MB 88.5 MB
Events in quadrant A3,290,405621,031
Events in quadrant B2,606,109649,125
Events in quadrant C2,715,675619,695
Events in quadrant D3,259,406555,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130613
B0110742
C0111062
D0132722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51911542.966673%
B5191210.404546%
C5191110.211905%
D51911953.756502%

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 7103 5192 107 107 1.51% 2.06%
B 7103 5192 8 8 0.11% 0.15%
C 7103 5192 4 4 0.06% 0.08%
D 7103 5192 165 165 2.32% 3.18%

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 460140 3726.68 603 591 123.3
A 13 248 443108 3588.56 603 591 123.3
A 15 223 27240 216.11 603 591 123.3
B 5 255 90644 770.34 608 592 116.9
B 0 230 43427 366.43 608 592 116.9
B 0 245 22029 183.38 608 592 116.9
C 15 214 216467 1573.16 593 598 137.2
C 4 254 101601 736.07 593 598 137.2
C 0 10 38943 279.44 593 598 137.2
D 12 227 680318 4795.76 582 568 141.7
D 12 233 88394 619.63 582 568 141.7
D 13 249 71507 500.49 582 568 141.7

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