ASTROSAT CZTI

Data Quality Report

Orbit 33775

Creation date: 2024-06-27T20:52:32.469337
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/AS1A11_086T01_9000004820_33775cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33775cztM0_level2_quad_clean.evt
Size (bytes)546,082,56076,976,640
Size520.8 MB 73.4 MB
Events in quadrant A5,073,421473,158
Events in quadrant B3,457,803492,719
Events in quadrant C2,961,507499,491
Events in quadrant D4,660,580467,706

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190543
B0140252
C0122202
D0178372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56874848.510638%
B56871933.393705%
C5687330.580271%
D56872233.921224%

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 7088 5688 347 347 4.90% 6.10%
B 7088 5688 133 133 1.88% 2.34%
C 7088 5688 27 27 0.38% 0.47%
D 7088 5688 191 191 2.69% 3.36%

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 15 237 1522437 11996.07 632 620 126.9
A 15 169 1077296 8487.14 632 620 126.9
A 13 6 14669 110.74 632 620 126.9
B 5 172 540436 4340.21 649 635 124.4
B 4 251 163778 1311.73 649 635 124.4
B 4 232 39220 310.24 649 635 124.4
C 15 214 249727 1680.3 642 649 148.2
C 0 10 99833 669.1 642 649 148.2
C 14 67 25695 168.96 642 649 148.2
D 8 195 1284560 8256.21 632 615 155.5
D 13 249 278583 1787.43 632 615 155.5
D 2 250 106582 681.4 632 615 155.5

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