ASTROSAT CZTI

Data Quality Report

Orbit 20160322_T01_034T01_9000000392_level2

Creation date: 2025-10-28T20:09:06.066244
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/AS1T01_034T01_9000000392cztM0_level2.fits modeM0/AS1T01_034T01_9000000392cztM0_level2_quad_clean.evt
Size (bytes)203,031,360320,653,440
Size193.6 MB 305.8 MB
Events in quadrant A1,187,3742,048,143
Events in quadrant B1,168,0862,105,569
Events in quadrant C1,191,1242,074,458
Events in quadrant D1,006,0801,887,861

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468650
B0476040
C0502750
D0509420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23196830.357820%
B231961110.478531%
C231962351.013106%
D231962701.163994%

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 27453 23197 0 0 0.00% 0.00%
B 27453 23197 0 0 0.00% 0.00%
C 27453 23196 0 0 0.00% 0.00%
D 27453 23197 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 1146 10.29 308 288 83.4
A 7 110 1049 9.12 308 288 83.4
A 14 79 911 7.47 308 288 83.4
B 2 9 1010 11.66 308 294 61.4
B 12 226 903 9.92 308 294 61.4
B 5 128 847 9.0 308 294 61.4
C 7 111 878 6.68 315 293 87.5
C 9 188 817 5.99 315 293 87.5
C 2 191 809 5.9 315 293 87.5
D 6 231 763 6.27 287 261 80.1
D 4 160 757 6.19 287 261 80.1
D 6 44 756 6.18 287 261 80.1

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