ASTROSAT CZTI

Data Quality Report

Orbit 20641

Creation date: 2024-06-27T18:17:55.346873
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/AS1A05_103T05_9000003052_20641cztM0_level2.evt modeM0/AS1A05_103T05_9000003052_20641cztM0_level2_quad_clean.evt
Size (bytes)251,651,52044,038,080
Size240.0 MB 42.0 MB
Events in quadrant A1,805,812283,669
Events in quadrant B1,870,962283,296
Events in quadrant C1,673,169271,942
Events in quadrant D2,050,218264,561

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075062
B076361
C069231
D082471

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3227802.479083%
B3227962.974899%
C3227772.386117%
D3227842.603037%

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 4552 3228 3 3 0.07% 0.09%
B 4552 3228 19 19 0.42% 0.59%
C 4552 3228 0 0 0.00% 0.00%
D 4552 3228 31 31 0.68% 0.96%

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 16 81028 917.94 432 423 87.8
A 5 16 43951 495.7 432 423 87.8
A 12 194 16460 182.63 432 423 87.8
B 7 220 114615 1410.28 427 416 81.0
B 0 219 25780 313.23 427 416 81.0
B 0 197 18837 227.49 427 416 81.0
C 14 238 64487 675.64 409 410 94.8
C 3 233 5023 48.64 409 410 94.8
C 7 247 4621 44.4 409 410 94.8
D 1 52 299642 2951.48 415 403 101.4
D 7 238 70261 689.03 415 403 101.4
D 13 153 43325 423.35 415 403 101.4

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