ASTROSAT CZTI

Data Quality Report

Orbit 41895

Creation date: 2024-06-27T22:34:06.519903
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_099T01_9000005716_41895cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41895cztM0_level2_quad_clean.evt
Size (bytes)340,660,80088,413,120
Size324.9 MB 84.3 MB
Events in quadrant A3,088,683605,715
Events in quadrant B2,935,360622,676
Events in quadrant C3,520,208561,144
Events in quadrant D2,685,916545,605

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121352
B0118272
C0132682
D0112682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4879360.737856%
B48781392.849528%
C48783567.298073%
D4878941.927019%

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 6971 4880 20 20 0.29% 0.41%
B 6970 4879 94 94 1.35% 1.93%
C 6970 4879 356 356 5.11% 7.30%
D 6970 4879 87 87 1.25% 1.78%

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 501334 4267.24 573 562 117.4
A 14 24 346268 2945.87 573 562 117.4
A 2 79 11833 96.04 573 562 117.4
B 5 255 663729 6231.41 566 552 106.4
B 0 190 24251 222.68 566 552 106.4
B 12 111 13084 117.75 566 552 106.4
C 0 10 885702 7131.56 541 546 124.1
C 14 254 312068 2509.88 541 546 124.1
C 15 214 189902 1525.61 541 546 124.1
D 13 112 133467 978.66 559 543 135.8
D 12 6 133148 976.31 559 543 135.8
D 13 249 99822 730.95 559 543 135.8

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