ASTROSAT CZTI

Data Quality Report

Orbit 09144

Creation date: 2024-06-27T15:41:52.894275
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/AS1C02_042T01_9000001278_09144cztM0_level2.evt modeM0/AS1C02_042T01_9000001278_09144cztM0_level2_quad_clean.evt
Size (bytes)142,776,00039,003,840
Size136.2 MB 37.2 MB
Events in quadrant A1,112,202259,436
Events in quadrant B1,062,876266,254
Events in quadrant C961,796263,584
Events in quadrant D1,052,509249,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0455910
B043593
C040441
D0436110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1946100.513875%
B1948140.718686%
C194920.102617%
D194580.411311%

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 3094 1950 6 6 0.19% 0.31%
B 3094 1950 4 4 0.13% 0.21%
C 3094 1950 0 0 0.00% 0.00%
D 3094 1950 4 4 0.13% 0.21%

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 5 134650 2646.59 244 238 50.8
A 1 162 14357 278.01 244 238 50.8
A 13 251 10542 202.89 244 238 50.8
B 4 48 36608 748.22 247 241 48.6
B 0 214 30165 615.66 247 241 48.6
B 0 213 13218 266.99 247 241 48.6
C 9 68 3318 53.16 244 246 57.8
C 4 239 3111 49.58 244 246 57.8
C 13 61 1772 26.41 244 246 57.8
D 7 71 49799 835.22 240 234 59.3
D 1 52 29438 492.12 240 234 59.3
D 13 137 23515 392.31 240 234 59.3

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