ASTROSAT CZTI

Data Quality Report

Orbit 20210812_A10_059T01_9000004634_level2

Creation date: 2025-12-28T08:06:25.281348
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_059T01_9000004634cztM0_level2.fits modeM0/AS1A10_059T01_9000004634cztM0_level2_quad_clean.evt
Size (bytes)335,534,400185,351,040
Size320.0 MB 176.8 MB
Events in quadrant A1,954,332833,026
Events in quadrant B2,059,886886,867
Events in quadrant C1,988,008781,542
Events in quadrant D1,876,730833,310

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06760
B06760
C06760
D06760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01342080
B01148510
C01165810
D0988520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33094855925.862694%
B3310425287.636539%
C33113567617.141304%
D3309315224.599160%

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 42329 32982 0 0 0.00% 0.00%
B 42329 33112 0 0 0.00% 0.00%
C 42329 33117 0 0 0.00% 0.00%
D 42329 33108 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 1667 9.51 510 485 124.2
A 7 110 1527 8.39 510 485 124.2
A 9 19 1443 7.71 510 485 124.2
B 2 9 1603 10.01 547 526 107.6
B 3 80 1401 8.13 547 526 107.6
B 5 128 1381 7.94 547 526 107.6
C 3 202 1506 7.62 526 497 132.4
C 3 203 1451 7.21 526 497 132.4
C 3 187 1426 7.02 526 497 132.4
D 6 67 1381 6.37 537 493 139.3
D 10 189 1346 6.12 537 493 139.3
D 15 47 1332 6.02 537 493 139.3

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