ASTROSAT CZTI

Data Quality Report

Orbit 21626

Creation date: 2024-06-27T18:30:22.131207
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_094T01_9000003204_21626cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21626cztM0_level2_quad_clean.evt
Size (bytes)438,315,84083,479,680
Size418.0 MB 79.6 MB
Events in quadrant A2,803,079538,241
Events in quadrant B2,975,712551,568
Events in quadrant C2,848,284528,476
Events in quadrant D4,256,121507,318

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119331
B0125411
C0121191
D0165331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5751200.347766%
B5752460.799722%
C5752681.182197%
D57525128.901252%

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 7076 5752 0 0 0.00% 0.00%
B 7077 5753 1 1 0.01% 0.02%
C 7077 5753 4 4 0.06% 0.07%
D 7077 5753 318 318 4.49% 5.53%

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 5 16 16709 111.67 718 704 143.3
A 15 236 10794 70.4 718 704 143.3
A 5 203 8678 55.64 718 704 143.3
B 0 229 30562 220.08 718 702 135.7
B 3 64 27536 197.78 718 702 135.7
B 5 175 25799 184.98 718 702 135.7
C 14 238 108576 675.71 686 691 159.7
C 0 207 58445 361.73 686 691 159.7
C 10 22 6483 36.28 686 691 159.7
D 7 38 705151 4350.86 669 649 161.9
D 7 238 434710 2680.67 669 649 161.9
D 1 52 359256 2214.68 669 649 161.9

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