ASTROSAT CZTI

Data Quality Report

Orbit 11975

Creation date: 2024-06-27T16:20:49.913474
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/AS1A04_082T01_9000001772_11975cztM0_level2.evt modeM0/AS1A04_082T01_9000001772_11975cztM0_level2_quad_clean.evt
Size (bytes)744,477,120103,749,120
Size710.0 MB 98.9 MB
Events in quadrant A4,238,819671,648
Events in quadrant B5,690,168654,527
Events in quadrant C3,764,720662,998
Events in quadrant D8,289,250573,423

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182954
B0225153
C0172673
D0302653

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83222472.968037%
B83226938.327325%
C83221722.066811%
D8322134016.101899%

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 8868 8323 15 15 0.17% 0.18%
B 8868 8323 281 281 3.17% 3.38%
C 8868 8324 0 0 0.00% 0.00%
D 8868 8323 1141 1141 12.87% 13.71%

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 1 162 152403 754.83 982 960 200.6
A 11 29 82819 408.01 982 960 200.6
A 1 178 77339 380.69 982 960 200.6
B 4 239 1006054 5323.92 969 940 188.8
B 0 85 663104 3507.37 969 940 188.8
B 15 204 82387 431.41 969 940 188.8
C 13 61 7116 27.34 964 968 224.9
C 5 96 3327 10.49 964 968 224.9
C 8 222 2671 7.57 964 968 224.9
D 1 52 3744507 17164.35 880 855 218.1
D 2 136 615330 2817.32 880 855 218.1
D 8 195 316198 1445.82 880 855 218.1

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