ASTROSAT CZTI

Data Quality Report

Orbit 36957

Creation date: 2024-06-27T21:33:34.870929
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/AS1C07_001T10_9000005252_36957cztM0_level2.evt modeM0/AS1C07_001T10_9000005252_36957cztM0_level2_quad_clean.evt
Size (bytes)444,024,00086,166,720
Size423.5 MB 82.2 MB
Events in quadrant A2,450,924577,064
Events in quadrant B3,352,728576,256
Events in quadrant C2,862,056579,356
Events in quadrant D4,450,648534,620

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104683
B0132432
C0115382
D0166072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4872160.328407%
B48721613.304598%
C48721312.688834%
D487251210.509031%

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 6995 4873 12 12 0.17% 0.25%
B 6995 4873 101 101 1.44% 2.07%
C 6995 4873 95 95 1.36% 1.95%
D 6995 4873 419 419 5.99% 8.60%

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 236179 2141.45 547 536 110.0
A 9 143 37577 336.62 547 536 110.0
A 15 237 15653 137.38 547 536 110.0
B 4 171 272674 2663.93 548 534 102.2
B 5 184 225850 2205.58 548 534 102.2
B 0 221 180227 1758.98 548 534 102.2
C 1 23 242044 1910.1 543 547 126.4
C 0 10 232796 1836.95 543 547 126.4
C 15 214 207366 1635.82 543 547 126.4
D 12 17 1718840 12407.9 518 508 138.5
D 2 250 207753 1496.5 518 508 138.5
D 13 171 121747 875.45 518 508 138.5

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