ASTROSAT CZTI

Data Quality Report

Orbit 29445

Creation date: 2024-06-27T20:04:11.096980
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/AS1A10_110T02_9000004234_29445cztM0_level2.evt modeM0/AS1A10_110T02_9000004234_29445cztM0_level2_quad_clean.evt
Size (bytes)2,047,723,200234,959,040
Size1.9 GB 224.1 MB
Events in quadrant A10,335,0451,508,706
Events in quadrant B10,551,7371,517,974
Events in quadrant C14,211,3691,427,625
Events in quadrant D25,610,9011,322,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04209273
B04258274
C05553750
D08966148

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0431
B0431
C0431
D0431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194333541.821644%
B194354022.068433%
C194448044.134952%
D19446556128.597141%

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 23773 19462 2 2 0.01% 0.01%
B 23774 19465 20 20 0.08% 0.10%
C 23774 19466 31 31 0.13% 0.16%
D 23773 19465 4161 4161 17.50% 21.38%

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 1 113 220198 417.87 2622 2570 520.8
A 13 254 35928 64.05 2622 2570 520.8
A 3 137 24530 42.17 2622 2570 520.8
B 0 229 100638 202.13 2566 2501 485.5
B 0 156 97033 194.7 2566 2501 485.5
B 15 33 85486 170.92 2566 2501 485.5
C 3 233 4131471 7256.33 2462 2479 569.0
C 14 238 415189 725.3 2462 2479 569.0
C 2 114 46519 77.4 2462 2479 569.0
D 12 33 7595415 13773.7 2303 2245 551.3
D 1 52 3591312 6510.42 2303 2245 551.3
D 13 104 2782705 5043.64 2303 2245 551.3

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