ASTROSAT CZTI

Data Quality Report

Orbit 20190901_A05_062T02_9000003138_level2

Creation date: 2025-12-03T11:09:00.833957
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_062T02_9000003138cztM0_level2.fits modeM0/AS1A05_062T02_9000003138cztM0_level2_quad_clean.evt
Size (bytes)327,280,320254,278,080
Size312.1 MB 242.5 MB
Events in quadrant A2,041,8781,436,662
Events in quadrant B1,977,7021,470,448
Events in quadrant C2,013,7521,442,834
Events in quadrant D1,616,6661,090,809

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820080
B0745920
C0694840
D01405480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06740
B06740
C06740
D06740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3286315744.789581%
B328639612.924261%
C328636762.057025%
D32862558016.980099%

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 40108 32833 0 0 0.00% 0.00%
B 40108 32849 0 0 0.00% 0.00%
C 40108 32856 0 0 0.00% 0.00%
D 40108 32725 0 0 0.00% 0.00%

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 29 1917 10.9 533 502 129.8
A 7 110 1616 8.58 533 502 129.8
A 0 30 1530 7.92 533 502 129.8
B 2 9 1525 10.05 523 500 102.0
B 5 225 1319 8.03 523 500 102.0
B 5 128 1305 7.89 523 500 102.0
C 1 80 1565 7.83 531 497 136.3
C 1 81 1528 7.56 531 497 136.3
C 12 241 1403 6.65 531 497 136.3
D 7 3 1197 6.29 462 422 123.3
D 6 67 1181 6.16 462 422 123.3
D 3 14 1173 6.09 462 422 123.3

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