ASTROSAT CZTI

Data Quality Report

Orbit 36220

Creation date: 2022-06-10T09:12:35.825357
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_080T02_9000005176_36220cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36220cztM0_level2_quad_clean.evt
Size (bytes)475,185,60049,400,640
Size453.2 MB 47.1 MB
Events in quadrant A2,804,263288,101
Events in quadrant B3,311,044290,336
Events in quadrant C2,818,438284,494
Events in quadrant D5,098,435262,031

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116033
B0131562
C0114432
D0188872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5288130.245840%
B52881593.006808%
C5288611.153555%
D528860211.384266%

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 7261 5289 4 4 0.06% 0.08%
B 7261 5289 92 92 1.27% 1.74%
C 7261 5289 52 52 0.72% 0.98%
D 7261 5289 586 586 8.07% 11.08%

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 180452 1448.91 615 603 124.1
A 15 223 155308 1246.35 615 603 124.1
A 7 16 48569 386.43 615 603 124.1
B 5 172 405826 3458.8 609 593 117.2
B 5 236 194596 1655.88 609 593 117.2
B 0 213 120990 1027.63 609 593 117.2
C 15 214 221282 1588.5 595 598 138.9
C 0 10 196149 1407.59 595 598 138.9
C 0 207 71562 510.8 595 598 138.9
D 12 227 1191173 8494.55 569 553 140.2
D 12 6 1063414 7583.05 569 553 140.2
D 12 235 208839 1486.03 569 553 140.2

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