ASTROSAT CZTI

Data Quality Report

Orbit 34895

Creation date: 2022-03-12T23:13:15.993260
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/AS1A11_053T01_9000004996_34895cztM0_level2.evt modeM0/AS1A11_053T01_9000004996_34895cztM0_level2_quad_clean.evt
Size (bytes)134,588,16019,261,440
Size128.4 MB 18.4 MB
Events in quadrant A785,896118,698
Events in quadrant B862,850120,488
Events in quadrant C899,940119,845
Events in quadrant D1,423,566112,970

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032212
B034211
C035141
D052401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A148440.269542%
B1484161.078167%
C1484432.897574%
D1484936.266846%

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 3127 1485 0 0 0.00% 0.00%
B 3127 1485 11 11 0.35% 0.74%
C 3127 1485 31 31 0.99% 2.09%
D 3127 1485 57 57 1.82% 3.84%

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 10 83 28164 699.02 191 188 40.0
A 7 3 7799 190.17 191 188 40.0
A 7 16 6179 149.69 191 188 40.0
B 5 172 73554 1898.4 189 184 38.6
B 0 190 20207 518.08 189 184 38.6
B 0 218 11992 305.52 189 184 38.6
C 0 10 100549 2274.8 183 184 44.1
C 15 214 69970 1581.72 183 184 44.1
C 14 67 14077 314.89 183 184 44.1
D 8 195 361933 7845.52 182 176 46.1
D 1 52 114498 2479.33 182 176 46.1
D 7 223 102493 2218.97 182 176 46.1

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