ASTROSAT CZTI

Data Quality Report

Orbit 42933

Creation date: 2024-06-27T22:45:57.420839
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/AS1T05_143T01_9000005830_42933cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42933cztM0_level2_quad_clean.evt
Size (bytes)559,008,00077,878,080
Size533.1 MB 74.3 MB
Events in quadrant A3,577,460621,106
Events in quadrant B9,759,220216,133
Events in quadrant C2,877,299596,000
Events in quadrant D4,037,317528,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140382
B0328922
C0120952
D0158632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56651512.665490%
B5665383567.696381%
C5665490.864960%
D56653225.684025%

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 7308 5666 141 141 1.93% 2.49%
B 7307 5664 3481 3481 47.64% 61.46%
C 7308 5666 49 49 0.67% 0.86%
D 7308 5666 336 336 4.60% 5.93%

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 625007 4852.46 624 612 128.7
A 15 222 523562 4064.08 624 612 128.7
A 13 6 12973 96.06 624 612 128.7
B 4 81 8324158 119065.19 355 345 69.9
B 4 171 8933 122.84 355 345 69.9
B 5 172 8753 120.27 355 345 69.9
C 15 214 250802 1780.36 602 607 140.5
C 14 254 232283 1648.58 602 607 140.5
C 12 249 36412 254.78 602 607 140.5
D 1 47 793232 5511.0 592 575 143.8
D 2 249 338540 2349.73 592 575 143.8
D 1 52 288347 2000.75 592 575 143.8

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