ASTROSAT CZTI

Data Quality Report

Orbit 07327

Creation date: 2024-06-27T15:18:30.836951
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_178T01_9000001006_07327cztM0_level2.evt modeM0/AS1A02_178T01_9000001006_07327cztM0_level2_quad_clean.evt
Size (bytes)743,823,36085,279,680
Size709.4 MB 81.3 MB
Events in quadrant A11,534,316303,602
Events in quadrant B3,399,287610,698
Events in quadrant C3,260,022599,788
Events in quadrant D3,846,844567,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392712
B0150961
C0147761
D0167601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7167393754.932329%
B7167921.283661%
C7167831.158086%
D71671532.134784%

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 7581 7166 2928 2928 38.62% 40.86%
B 7582 7169 1 1 0.01% 0.01%
C 7582 7169 4 4 0.05% 0.06%
D 7582 7169 70 70 0.92% 0.98%

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 15 234 9370712 80712.94 556 543 116.1
A 15 250 16361 136.25 556 543 116.1
A 0 226 5097 39.23 556 543 116.1
B 0 214 64179 391.99 836 814 161.7
B 4 81 42232 256.22 836 814 161.7
B 11 51 38032 230.24 836 814 161.7
C 9 68 75766 394.49 815 818 190.0
C 13 61 6279 28.74 815 818 190.0
C 12 4 3691 15.12 815 818 190.0
D 2 216 429260 2170.84 806 782 197.4
D 14 34 219705 1109.15 806 782 197.4
D 12 233 98957 497.39 806 782 197.4

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