ASTROSAT CZTI

Data Quality Report

Orbit 07326

Creation date: 2024-06-27T15:18:30.003876
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/AS1A02_178T01_9000001006_07326cztM0_level2.evt modeM0/AS1A02_178T01_9000001006_07326cztM0_level2_quad_clean.evt
Size (bytes)750,441,60087,364,800
Size715.7 MB 83.3 MB
Events in quadrant A11,920,102344,131
Events in quadrant B3,398,818620,482
Events in quadrant C3,268,784608,105
Events in quadrant D3,655,204574,413

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403183
B0150752
C0146922
D0162612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7136439961.645179%
B7136640.896861%
C7136340.476457%
D7136921.289238%

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 8026 7136 3278 3278 40.84% 45.94%
B 8026 7137 2 2 0.02% 0.03%
C 8026 7137 0 0 0.00% 0.00%
D 8026 7137 32 32 0.40% 0.45%

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 15 234 10060501 104875.42 464 454 95.9
A 14 111 62058 642.22 464 454 95.9
A 15 250 6416 62.15 464 454 95.9
B 0 214 58688 358.75 844 824 161.3
B 4 81 40277 244.61 844 824 161.3
B 12 111 16506 97.23 844 824 161.3
C 9 68 67565 347.67 820 826 192.0
C 13 61 6285 28.44 820 826 192.0
C 12 4 3950 16.27 820 826 192.0
D 2 216 489981 2482.26 808 783 197.1
D 2 14 39275 195.31 808 783 197.1
D 13 105 31613 156.44 808 783 197.1

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