ASTROSAT CZTI

Data Quality Report

Orbit 32177

Creation date: 2024-06-27T20:37:16.396240
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/AS1A09_131T01_9000004690_32177cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32177cztM0_level2_quad_clean.evt
Size (bytes)578,695,680132,163,200
Size551.9 MB 126.0 MB
Events in quadrant A3,244,974904,563
Events in quadrant B5,353,816913,608
Events in quadrant C3,621,306899,468
Events in quadrant D4,881,932847,872

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136923
B0202512
C0148082
D0186132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6273530.844891%
B62732343.730273%
C62732734.351985%
D62732994.766459%

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 7583 6274 0 0 0.00% 0.00%
B 7583 6274 68 68 0.90% 1.08%
C 7583 6274 54 54 0.71% 0.86%
D 7583 6274 176 176 2.32% 2.81%

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 12 189 45079 273.49 821 807 161.9
A 15 174 18100 106.83 821 807 161.9
A 13 254 14285 83.26 821 807 161.9
B 6 159 1763244 11946.19 814 797 147.5
B 5 172 211213 1426.24 814 797 147.5
B 0 190 61233 409.65 814 797 147.5
C 0 10 287010 1576.09 792 798 181.6
C 14 238 147108 805.69 792 798 181.6
C 3 233 35778 192.63 792 798 181.6
D 8 195 1359280 7303.1 786 767 186.0
D 12 218 397003 2130.09 786 767 186.0
D 2 250 55923 296.51 786 767 186.0

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