ASTROSAT CZTI

Data Quality Report

Orbit 45903

Creation date: 2024-06-27T23:17:30.709849
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/AS1A13_033T02_9000006140_45903cztM0_level2.fits modeM0/AS1A13_033T02_9000006140_45903cztM0_level2_quad_clean.evt
Size (bytes)1,559,664,000308,269,440
Size1.5 GB 294.0 MB
Events in quadrant A16,470,3152,129,998
Events in quadrant B20,808,0421,877,542
Events in quadrant C8,414,0492,085,995
Events in quadrant D10,583,3151,937,116

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0616433
B0752233
C0389463
D0447513

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188984942.614033%
B18898292815.493703%
C188971360.719691%
D188983782.000212%

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 20383 18900 21 21 0.10% 0.11%
B 20383 18900 1509 1509 7.40% 7.98%
C 20382 18899 3 3 0.01% 0.02%
D 20383 18901 195 195 0.96% 1.03%

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 10 83 7801741 17298.84 2173 2129 450.9
A 14 235 209796 460.59 2173 2129 450.9
A 3 137 25110 50.97 2173 2129 450.9
B 3 112 12253122 29982.03 2065 2001 408.6
B 4 171 119738 288.14 2065 2001 408.6
B 0 245 66111 156.9 2065 2001 408.6
C 2 14 36334 67.83 2139 2157 503.9
C 3 9 14933 25.36 2139 2157 503.9
C 13 61 14207 23.91 2139 2157 503.9
D 2 249 837592 1523.77 2148 2084 548.3
D 1 52 395721 717.9 2148 2084 548.3
D 5 171 229913 415.51 2148 2084 548.3

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