ASTROSAT CZTI

Data Quality Report

Orbit 26469

Creation date: 2024-06-27T19:29:25.297095
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/AS1A09_104T02_9000003826_26469cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26469cztM0_level2_quad_clean.evt
Size (bytes)559,307,52085,057,920
Size533.4 MB 81.1 MB
Events in quadrant A3,015,905570,877
Events in quadrant B3,053,353579,458
Events in quadrant C3,158,738548,036
Events in quadrant D7,293,675447,511

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127780
B0128290
C0130920
D0257830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6152711.154096%
B6152771.251625%
C61521111.804291%
D6153145123.581993%

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 7077 6152 0 0 0.00% 0.00%
B 7077 6152 0 0 0.00% 0.00%
C 7077 6152 18 18 0.25% 0.29%
D 7078 6154 1288 1288 18.20% 20.93%

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 13 254 9010 52.39 782 766 157.4
A 3 137 7228 41.06 782 766 157.4
A 0 226 6696 37.68 782 766 157.4
B 12 111 18418 119.4 771 753 147.9
B 11 111 16200 104.41 771 753 147.9
B 14 111 14638 93.85 771 753 147.9
C 14 238 118471 681.2 738 742 172.8
C 3 233 82935 475.58 738 742 172.8
C 2 16 66442 380.15 738 742 172.8
D 7 80 4214207 26150.06 676 662 161.1
D 11 176 189856 1174.17 676 662 161.1
D 12 233 154436 954.35 676 662 161.1

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