ASTROSAT CZTI

Data Quality Report

Orbit 34122

Creation date: 2024-06-27T20:56:44.793268
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_097T08_9000004874_34122cztM0_level2.evt modeM0/AS1A11_097T08_9000004874_34122cztM0_level2_quad_clean.evt
Size (bytes)2,302,318,080306,607,680
Size2.1 GB 292.4 MB
Events in quadrant A12,727,5291,905,734
Events in quadrant B16,223,5271,928,376
Events in quadrant C17,443,6141,846,934
Events in quadrant D21,533,9491,768,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0539787
B0646576
C0683256
D0823926

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440
B05440
C05440
D05440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26714250.093584%
B267147632.856180%
C267146032.257243%
D2671415015.618777%

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 38490 26720 0 0 0.00% 0.00%
B 38490 26720 495 495 1.29% 1.85%
C 38490 26720 555 555 1.44% 2.08%
D 38490 26720 1332 1332 3.46% 4.99%

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 76584 113.11 3261 3198 648.8
A 13 6 58098 84.62 3261 3198 648.8
A 13 254 48378 69.63 3261 3198 648.8
B 5 172 2596970 4310.96 3210 3132 601.7
B 0 219 269779 443.17 3210 3132 601.7
B 0 189 137634 223.54 3210 3132 601.7
C 0 10 3353124 4707.93 3119 3144 711.6
C 15 214 1149535 1611.09 3119 3144 711.6
C 3 233 389168 542.5 3119 3144 711.6
D 8 195 2834388 3451.59 3066 3002 820.3
D 10 118 2025624 2465.67 3066 3002 820.3
D 15 0 1174024 1427.53 3066 3002 820.3

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