ASTROSAT CZTI

Data Quality Report

Orbit 40276

Creation date: 2024-06-27T22:14:28.539220
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_056T02_9000005538_40276cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40276cztM0_level2_quad_clean.evt
Size (bytes)366,128,64095,016,960
Size349.2 MB 90.6 MB
Events in quadrant A3,124,508645,870
Events in quadrant B2,633,625657,416
Events in quadrant C2,826,255630,773
Events in quadrant D4,528,056547,364

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127913
B0117792
C0118472
D0173672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5656380.671853%
B5656370.654173%
C5656220.388967%
D56564067.178218%

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 9090 5658 22 22 0.24% 0.39%
B 9090 5658 16 16 0.18% 0.28%
C 9090 5658 14 14 0.15% 0.25%
D 9090 5658 398 398 4.38% 7.03%

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 496731 3860.04 627 615 128.5
A 13 248 179771 1393.93 627 615 128.5
A 13 6 10592 77.63 627 615 128.5
B 0 245 65908 542.88 624 606 120.3
B 15 85 31615 257.79 624 606 120.3
B 5 255 30714 250.3 624 606 120.3
C 15 214 240470 1648.98 619 623 145.5
C 14 254 142979 978.71 619 623 145.5
C 0 10 23516 157.39 619 623 145.5
D 12 227 1872500 12824.1 596 579 146.0
D 12 0 94885 646.07 596 579 146.0
D 1 47 89480 609.04 596 579 146.0

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