ASTROSAT CZTI

Data Quality Report

Orbit 21956

Creation date: 2024-06-27T18:34:28.461162
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_007T02_9000003244_21956cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21956cztM0_level2_quad_clean.evt
Size (bytes)531,722,880105,168,960
Size507.1 MB 100.3 MB
Events in quadrant A4,186,385684,567
Events in quadrant B3,883,036696,258
Events in quadrant C3,804,073661,562
Events in quadrant D3,753,107653,362

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170432
B0160662
C0156752
D0155092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70211572.236149%
B70221622.307035%
C70221752.492167%
D70221001.424096%

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 9386 7021 0 0 0.00% 0.00%
B 9387 7022 4 4 0.04% 0.06%
C 9387 7022 6 6 0.06% 0.09%
D 9387 7022 2 2 0.02% 0.03%

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 2 79 376771 1935.55 982 967 194.2
A 4 2 27330 135.78 982 967 194.2
A 13 254 12149 57.59 982 967 194.2
B 3 64 48172 260.72 968 947 181.1
B 0 197 23662 125.4 968 947 181.1
B 12 111 21462 113.26 968 947 181.1
C 14 238 148718 687.35 931 938 215.0
C 10 22 24586 109.99 931 938 215.0
C 13 61 6535 26.03 931 938 215.0
D 2 136 47449 206.34 951 928 225.5
D 1 52 36109 156.04 951 928 225.5
D 13 254 29129 125.08 951 928 225.5

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