ASTROSAT CZTI

Data Quality Report

Orbit 07889

Creation date: 2024-06-27T15:25:15.023746
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/AS1A02_071T01_9000001078_07889cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07889cztM0_level2_quad_clean.evt
Size (bytes)552,893,76098,936,640
Size527.3 MB 94.4 MB
Events in quadrant A3,449,322635,842
Events in quadrant B3,318,092660,351
Events in quadrant C5,575,549629,271
Events in quadrant D3,946,931603,194

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147383
B0142592
C0211532
D0162842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6701330.492464%
B6701580.865542%
C67013224.805253%
D67011412.104164%

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 7946 6702 6 6 0.08% 0.09%
B 7946 6702 14 14 0.18% 0.21%
C 7946 6702 213 213 2.68% 3.18%
D 7946 6702 129 129 1.62% 1.92%

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 15 239 357583 2206.22 801 784 161.7
A 0 226 7451 41.22 801 784 161.7
A 12 194 7012 38.51 801 784 161.7
B 4 80 47552 304.21 817 800 153.7
B 4 239 36731 233.8 817 800 153.7
B 4 81 25196 158.74 817 800 153.7
C 1 16 2495723 13713.63 789 794 181.9
C 13 61 6096 29.14 789 794 181.9
C 12 4 2833 11.21 789 794 181.9
D 1 52 413273 2161.26 784 762 190.9
D 4 95 216878 1132.29 784 762 190.9
D 14 34 105083 546.57 784 762 190.9

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