ASTROSAT CZTI

Data Quality Report

Orbit 32676

Creation date: 2024-06-27T20:40:42.965454
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/AS1A10_057T03_9000004722_32676cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32676cztM0_level2_quad_clean.evt
Size (bytes)744,160,32064,356,480
Size709.7 MB 61.4 MB
Events in quadrant A4,106,301400,552
Events in quadrant B4,030,288421,832
Events in quadrant C3,964,263416,077
Events in quadrant D10,039,299298,923

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159143
B0158942
C0154572
D0338402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58693946.713239%
B58691031.754984%
C58692223.782586%
D5869323455.103084%

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 7182 5870 184 184 2.56% 3.13%
B 7182 5870 75 75 1.04% 1.28%
C 7182 5870 212 212 2.95% 3.61%
D 7182 5870 2526 2526 35.17% 43.03%

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 15 249 1460967 10871.54 665 651 134.3
A 0 254 23318 168.74 665 651 134.3
A 13 6 20879 150.59 665 651 134.3
B 3 26 501753 3730.78 692 677 134.3
B 0 219 312559 2322.13 692 677 134.3
B 4 251 124609 922.74 692 677 134.3
C 0 10 769364 4938.01 659 665 155.7
C 9 236 239394 1533.56 659 665 155.7
C 8 50 126632 809.19 659 665 155.7
D 7 38 4690930 41622.91 468 457 112.7
D 12 2 954148 8462.98 468 457 112.7
D 12 218 791572 7020.3 468 457 112.7

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