ASTROSAT CZTI

Data Quality Report

Orbit 34303

Creation date: 2022-01-31T20:54:00.467552
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/AS1T04_086T01_9000004890_34303cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34303cztM0_level2_quad_clean.evt
Size (bytes)154,990,08037,405,440
Size147.8 MB 35.7 MB
Events in quadrant A891,070250,045
Events in quadrant B1,125,569251,378
Events in quadrant C953,083249,503
Events in quadrant D1,589,135239,326

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039860
B046650
C040180
D060900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194930.153925%
B1949170.872242%
C194920.102617%
D1949402.052335%

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 1949 1949 2 2 0.10% 0.10%
B 1949 1949 11 11 0.56% 0.56%
C 1949 1949 3 3 0.15% 0.15%
D 1949 1949 31 31 1.59% 1.59%

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 7 16 26836 584.13 219 215 45.6
A 13 6 6485 137.58 219 215 45.6
A 10 83 4017 83.43 219 215 45.6
B 4 251 77715 1791.23 216 211 43.3
B 5 172 64647 1489.21 216 211 43.3
B 5 31 62206 1432.8 216 211 43.3
C 15 214 81853 1627.71 213 215 50.2
C 14 254 26571 525.49 213 215 50.2
C 9 187 8300 161.2 213 215 50.2
D 8 195 323636 5728.85 214 210 56.5
D 12 235 134010 2370.0 214 210 56.5
D 2 249 129609 2292.05 214 210 56.5

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