ASTROSAT CZTI

Data Quality Report

Orbit 44239

Creation date: 2024-06-27T23:00:51.891964
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/AS1A13_074T03_9000005976_44239cztM0_level2.fits modeM0/AS1A13_074T03_9000005976_44239cztM0_level2_quad_clean.evt
Size (bytes)507,389,760110,790,720
Size483.9 MB 105.7 MB
Events in quadrant A6,509,619724,504
Events in quadrant B3,486,865766,050
Events in quadrant C3,355,695737,728
Events in quadrant D4,900,576651,486

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242092
B0148042
C0148332
D0192532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68164126.044601%
B68172032.977849%
C68171652.420420%
D68175077.437289%

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 8641 6817 95 95 1.10% 1.39%
B 8642 6818 20 20 0.23% 0.29%
C 8642 6818 31 31 0.36% 0.45%
D 8642 6819 340 340 3.93% 4.99%

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 15 223 1885178 11651.91 784 766 161.7
A 10 83 1479264 9142.02 784 766 161.7
A 7 3 53061 323.36 784 766 161.7
B 4 158 89818 575.74 789 765 154.7
B 0 155 76316 488.45 789 765 154.7
B 0 213 53495 340.91 789 765 154.7
C 14 254 225413 1208.88 784 790 185.8
C 3 233 25605 133.55 784 790 185.8
C 4 254 24116 125.54 784 790 185.8
D 13 249 934461 4841.91 768 745 192.8
D 1 52 847372 4390.3 768 745 192.8
D 2 249 50349 257.23 768 745 192.8

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