ASTROSAT CZTI

Data Quality Report

Orbit 32100

Creation date: 2024-06-27T20:36:28.747721
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/AS1T04_051T01_9000004686_32100cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32100cztM0_level2_quad_clean.evt
Size (bytes)2,612,655,360301,438,080
Size2.4 GB 287.5 MB
Events in quadrant A10,934,9302,007,870
Events in quadrant B20,836,8331,930,626
Events in quadrant C15,189,3061,871,284
Events in quadrant D30,612,5311,726,467

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0474944
B0781564
C0600164
D01073284

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04700
C04700
D04700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231251150.497297%
B2312612425.370579%
C2312622329.651475%
D23126484920.967742%

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 25530 23128 1 1 0.00% 0.00%
B 25531 23127 700 700 2.74% 3.03%
C 25531 23128 850 850 3.33% 3.68%
D 25531 23128 5012 5012 19.63% 21.67%

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 15 174 79210 137.04 2796 2741 558.0
A 13 6 52377 88.95 2796 2741 558.0
A 13 254 46005 77.53 2796 2741 558.0
B 6 159 6530840 12708.8 2725 2656 513.7
B 10 245 1947895 3786.91 2725 2656 513.7
B 12 18 538017 1042.22 2725 2656 513.7
C 0 10 3802464 6335.59 2573 2591 599.8
C 14 238 728151 1209.74 2573 2591 599.8
C 14 254 435355 721.55 2573 2591 599.8
D 12 79 9870980 16370.6 2534 2464 602.8
D 8 195 7522516 12474.8 2534 2464 602.8
D 12 218 1943359 3219.7 2534 2464 602.8

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