ASTROSAT CZTI

Data Quality Report

Orbit 24934

Creation date: 2024-06-27T19:11:37.957732
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/AS1T03_205T01_9000003652_24934cztM0_level2.evt modeM0/AS1T03_205T01_9000003652_24934cztM0_level2_quad_clean.evt
Size (bytes)500,299,200131,489,280
Size477.1 MB 125.4 MB
Events in quadrant A3,301,643896,369
Events in quadrant B3,353,881904,963
Events in quadrant C3,805,277856,517
Events in quadrant D4,222,682844,355

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143482
B0144082
C0156662
D0172722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6896811.174594%
B6896570.826566%
C6896741.073086%
D68961882.726218%

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 7765 6896 31 31 0.40% 0.45%
B 7765 6896 3 3 0.04% 0.04%
C 7765 6896 0 0 0.00% 0.00%
D 7765 6896 106 106 1.37% 1.54%

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 75197 444.74 829 810 167.3
A 15 239 26406 153.03 829 810 167.3
A 13 254 11182 62.01 829 810 167.3
B 0 230 32092 200.66 822 803 155.9
B 10 251 30840 192.63 822 803 155.9
B 0 229 30572 190.91 822 803 155.9
C 7 247 612038 3326.27 786 789 183.8
C 14 238 125828 680.43 786 789 183.8
C 13 61 5513 25.71 786 789 183.8
D 1 52 676036 3556.87 791 766 189.8
D 1 239 295553 1552.74 791 766 189.8
D 8 195 108195 565.86 791 766 189.8

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