ASTROSAT CZTI

Data Quality Report

Orbit 25918

Creation date: 2024-06-27T19:22:49.687631
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_214T01_9000003758_25918cztM0_level2.evt modeM0/AS1T03_214T01_9000003758_25918cztM0_level2_quad_clean.evt
Size (bytes)1,779,327,360152,985,600
Size1.7 GB 145.9 MB
Events in quadrant A32,456,618375,431
Events in quadrant B6,418,8331,145,522
Events in quadrant C6,474,1841,100,250
Events in quadrant D7,637,0441,084,961

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01055800
B0275710
C0277260
D0317970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133631230592.082616%
B133631351.010252%
C133631881.406870%
D133632611.953154%

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 15268 13363 10815 10815 70.83% 80.93%
B 15268 13366 3 3 0.02% 0.02%
C 15268 13366 0 0 0.00% 0.00%
D 15268 13366 146 146 0.96% 1.09%

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 0 13 29624006 203201.67 733 718 145.8
A 13 254 9351 59.22 733 718 145.8
A 3 137 6679 40.89 733 718 145.8
B 0 219 88519 288.43 1594 1549 301.5
B 0 190 45572 146.0 1594 1549 301.5
B 12 111 37849 120.39 1594 1549 301.5
C 14 238 245876 684.26 1531 1540 357.1
C 3 233 239344 665.97 1531 1540 357.1
C 2 16 29319 77.8 1531 1540 357.1
D 7 80 914669 2496.24 1540 1500 365.8
D 1 52 814301 2221.87 1540 1500 365.8
D 2 234 56373 150.0 1540 1500 365.8

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