ASTROSAT CZTI

Data Quality Report

Orbit 24818

Creation date: 2024-06-27T19:10:13.684503
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/AS1A07_045T01_9000003628_24818cztM0_level2.evt modeM0/AS1A07_045T01_9000003628_24818cztM0_level2_quad_clean.evt
Size (bytes)314,910,72051,736,320
Size300.3 MB 49.3 MB
Events in quadrant A2,255,716313,305
Events in quadrant B2,286,861319,446
Events in quadrant C2,340,416301,671
Events in quadrant D2,329,475297,673

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097831
B098521
C0101301
D0101801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4756310.651808%
B4756350.735913%
C4756741.555929%
D4756240.504626%

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 5611 4757 0 0 0.00% 0.00%
B 5611 4757 0 0 0.00% 0.00%
C 5611 4757 1 1 0.02% 0.02%
D 5611 4757 2 2 0.04% 0.04%

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 12 96 10771 86.04 581 567 118.6
A 13 254 7057 54.72 581 567 118.6
A 3 137 5506 41.64 581 567 118.6
B 3 64 14198 120.9 576 561 112.8
B 12 111 14143 120.42 576 561 112.8
B 11 111 12644 107.13 576 561 112.8
C 14 238 89305 673.3 554 559 131.8
C 2 16 44175 330.91 554 559 131.8
C 7 247 34971 261.08 554 559 131.8
D 8 195 187095 1362.48 563 547 136.9
D 2 234 20176 143.36 563 547 136.9
D 13 138 8493 58.03 563 547 136.9

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