ASTROSAT CZTI

Data Quality Report

Orbit 48357

Creation date: 2024-09-06T13:41:33.157251
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/AS1A13_037T05_9000006424_48357cztM0_level2.fits modeM0/AS1A13_037T05_9000006424_48357cztM0_level2_quad_clean.evt
Size (bytes)696,916,800169,885,440
Size664.6 MB 162.0 MB
Events in quadrant A10,820,1461,124,828
Events in quadrant B4,882,5461,162,728
Events in quadrant C4,609,2581,105,749
Events in quadrant D4,652,4381,006,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395861
B0222727
C0222094
D0224801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107552582.398884%
B10752780.725446%
C10754660.613725%
D10756950.883228%

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 11045 10756 55 55 0.50% 0.51%
B 11046 10756 19 19 0.17% 0.18%
C 11046 10757 49 49 0.44% 0.46%
D 11046 10758 77 77 0.70% 0.72%

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 6201608 26023.08 1145 1120 238.3
A 13 248 163823 682.85 1145 1120 238.3
A 13 254 21869 87.08 1145 1120 238.3
B 4 21 144518 634.69 1146 1111 225.9
B 5 255 58068 252.08 1146 1111 225.9
B 0 198 34358 147.14 1146 1111 225.9
C 12 2 158237 596.63 1123 1128 263.3
C 1 3 24084 87.17 1123 1128 263.3
C 15 208 15422 54.28 1123 1128 263.3
D 1 232 208336 736.12 1119 1086 281.5
D 2 234 59576 207.75 1119 1086 281.5
D 2 233 50464 175.38 1119 1086 281.5

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