ASTROSAT CZTI

Data Quality Report

Orbit 20200102_A07_049T01_9000003408_level2

Creation date: 2025-12-08T02:11:16.893064
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/AS1A07_049T01_9000003408cztM0_level2.fits modeM0/AS1A07_049T01_9000003408cztM0_level2_quad_clean.evt
Size (bytes)2,062,235,5201,808,991,360
Size1.9 GB 1.7 GB
Events in quadrant A12,256,0189,881,565
Events in quadrant B12,354,74810,908,192
Events in quadrant C12,524,93410,407,077
Events in quadrant D10,745,9129,028,216

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05665290
B04629690
C04657340
D05925120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043240
B043240
C043240
D043240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A212558177818.365246%
B21255852552.472266%
C21255853402.512255%
D212558148526.987269%

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 245422 211803 0 0 0.00% 0.00%
B 245422 212461 0 0 0.00% 0.00%
C 245422 212539 0 0 0.00% 0.00%
D 245422 212488 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 11596 10.98 3188 2989 783.6
A 7 110 9765 8.65 3188 2989 783.6
A 9 19 9096 7.79 3188 2989 783.6
B 2 9 9920 10.79 3269 3121 629.9
B 2 8 8464 8.48 3269 3121 629.9
B 5 225 8032 7.8 3269 3121 629.9
C 12 241 8657 6.65 3316 3108 833.9
C 2 191 8453 6.41 3316 3108 833.9
C 3 126 8391 6.33 3316 3108 833.9
D 13 238 7773 6.16 3073 2804 807.0
D 6 231 7620 5.97 3073 2804 807.0
D 15 46 7555 5.89 3073 2804 807.0

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