ASTROSAT CZTI

Data Quality Report

Orbit 16501

Creation date: 2024-06-27T17:23:37.842296
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/AS1A05_174T01_9000002440_16501cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16501cztM0_level2_quad_clean.evt
Size (bytes)475,804,80095,103,360
Size453.8 MB 90.7 MB
Events in quadrant A3,349,422612,693
Events in quadrant B3,354,308636,429
Events in quadrant C3,506,895601,955
Events in quadrant D3,760,715578,552

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139203
B0140102
C0144732
D0156542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6461180.278595%
B6461370.572667%
C6461310.479802%
D64611953.018109%

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 7822 6463 0 0 0.00% 0.00%
B 7822 6463 3 3 0.04% 0.05%
C 7822 6463 1 1 0.01% 0.02%
D 7822 6463 134 134 1.71% 2.07%

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 15 174 224082 1380.85 804 789 161.7
A 3 1 30071 181.08 804 789 161.7
A 0 226 7168 39.44 804 789 161.7
B 0 198 49839 321.18 815 797 152.7
B 15 35 48188 310.37 815 797 152.7
B 5 236 28123 178.96 815 797 152.7
C 7 247 282464 1549.41 781 789 181.8
C 14 238 122246 668.1 781 789 181.8
C 3 233 57532 312.13 781 789 181.8
D 13 249 705083 3756.54 774 752 187.5
D 5 222 55853 293.88 774 752 187.5
D 2 33 40465 211.81 774 752 187.5

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