ASTROSAT CZTI

Data Quality Report

Orbit 06656

Creation date: 2024-06-27T15:09:56.106821
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/AS1A02_103T01_9000000904_06656cztM0_level2.evt modeM0/AS1A02_103T01_9000000904_06656cztM0_level2_quad_clean.evt
Size (bytes)506,856,96083,116,800
Size483.4 MB 79.3 MB
Events in quadrant A3,187,790527,284
Events in quadrant B3,270,175539,777
Events in quadrant C3,154,200528,867
Events in quadrant D5,308,942479,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136083
B0140072
C0135092
D0201772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6325751.185771%
B6325791.249012%
C6325540.853755%
D632564310.166008%

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 8705 6327 4 4 0.05% 0.06%
B 8705 6327 7 7 0.08% 0.11%
C 8705 6327 1 1 0.01% 0.02%
D 8705 6327 503 503 5.78% 7.95%

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 8 15 142468 901.53 775 759 157.2
A 15 239 29065 180.08 775 759 157.2
A 13 248 14295 86.11 775 759 157.2
B 0 228 58646 388.16 788 770 149.1
B 4 81 52945 349.93 788 770 149.1
B 0 245 23591 153.06 788 770 149.1
C 9 247 110256 625.7 759 765 175.0
C 4 254 69559 393.13 759 765 175.0
C 1 16 12966 69.72 759 765 175.0
D 2 33 1948033 10801.96 729 707 180.3
D 8 195 289360 1601.18 729 707 180.3
D 12 221 132835 732.92 729 707 180.3

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