ASTROSAT CZTI

Data Quality Report

Orbit 12437

Creation date: 2024-06-27T16:27:20.821183
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/AS1A04_141T01_9000001848_12437cztM0_level2.evt modeM0/AS1A04_141T01_9000001848_12437cztM0_level2_quad_clean.evt
Size (bytes)778,752,00084,908,160
Size742.7 MB 81.0 MB
Events in quadrant A5,168,695520,466
Events in quadrant B5,441,329488,270
Events in quadrant C4,011,017528,578
Events in quadrant D8,420,406474,904

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206213
B0212522
C0174442
D0305772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80355156.409459%
B8035100912.557561%
C80353874.816428%
D8035126515.743622%

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 8721 8036 30 30 0.34% 0.37%
B 8721 8036 480 480 5.50% 5.97%
C 8721 8037 12 12 0.14% 0.15%
D 8721 8036 1079 1079 12.37% 13.43%

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 13 251 665880 3255.83 998 973 204.2
A 15 239 242089 1180.67 998 973 204.2
A 1 162 142680 693.89 998 973 204.2
B 4 239 1501433 7935.43 970 942 189.1
B 3 209 37492 193.3 970 942 189.1
B 3 64 37427 192.95 970 942 189.1
C 15 208 104250 447.29 990 991 230.9
C 14 234 35536 149.64 990 991 230.9
C 8 112 9489 36.81 990 991 230.9
D 1 52 4700050 20380.77 958 928 230.6
D 13 249 47327 201.24 958 928 230.6
D 2 234 29138 122.35 958 928 230.6

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