ASTROSAT CZTI

Data Quality Report

Orbit 35415

Creation date: 2022-09-12T19:27:03.454345
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/AS1T05_022T01_9000005070_35415cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35415cztM0_level2_quad_clean.evt
Size (bytes)1,874,784,960208,085,760
Size1.7 GB 198.4 MB
Events in quadrant A7,392,8671,425,332
Events in quadrant B28,128,5771,046,053
Events in quadrant C8,499,4281,415,811
Events in quadrant D11,703,1771,331,914

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321225
B0942404
C0346324
D0451674

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15661250.159632%
B15661899057.403742%
C156612021.289828%
D156616534.169593%

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 19840 15664 0 0 0.00% 0.00%
B 19840 15664 7756 7756 39.09% 49.51%
C 19840 15664 133 133 0.67% 0.85%
D 19840 15664 460 460 2.32% 2.94%

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 314033 860.81 1814 1776 362.7
A 13 6 45734 121.18 1814 1776 362.7
A 13 254 25352 64.99 1814 1776 362.7
B 5 236 5118715 20694.22 1288 1253 247.3
B 4 251 4596424 18582.16 1288 1253 247.3
B 5 31 4072697 16464.29 1288 1253 247.3
C 15 214 631357 1538.28 1766 1778 409.3
C 0 10 579059 1410.5 1766 1778 409.3
C 0 207 336401 817.6 1766 1778 409.3
D 7 80 1160040 2733.05 1739 1692 423.8
D 8 195 1123274 2646.3 1739 1692 423.8
D 13 249 619040 1456.59 1739 1692 423.8

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