ASTROSAT CZTI

Data Quality Report

Orbit 31703

Creation date: 2024-06-27T20:31:43.640925
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_034T01_9000004632_31703cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31703cztM0_level2_quad_clean.evt
Size (bytes)669,049,920102,386,880
Size638.1 MB 97.6 MB
Events in quadrant A4,050,028670,426
Events in quadrant B6,466,545662,951
Events in quadrant C4,143,152660,230
Events in quadrant D5,144,271634,301

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163402
B0238362
C0165562
D0196212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67781872.758926%
B67796479.544181%
C67793935.797315%
D67795107.523234%

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 8878 6780 88 88 0.99% 1.30%
B 8879 6781 370 370 4.17% 5.46%
C 8879 6781 126 126 1.42% 1.86%
D 8879 6781 344 344 3.87% 5.07%

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 0 13 707045 4080.06 864 848 173.1
A 13 254 11893 63.81 864 848 173.1
A 3 137 8724 45.5 864 848 173.1
B 6 159 1844958 11309.04 847 826 163.1
B 4 80 1139846 6984.98 847 826 163.1
B 5 172 86451 525.09 847 826 163.1
C 0 10 447982 2307.24 826 833 193.8
C 10 22 204705 1051.96 826 833 193.8
C 14 238 133103 682.5 826 833 193.8
D 8 195 972609 4953.06 820 797 196.2
D 13 249 843411 4294.57 820 797 196.2
D 12 227 117403 594.31 820 797 196.2

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