ASTROSAT CZTI

Data Quality Report

Orbit 21475

Creation date: 2024-06-27T18:28:20.303798
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/AS1T03_138T02_9000003172_21475cztM0_level2.evt modeM0/AS1T03_138T02_9000003172_21475cztM0_level2_quad_clean.evt
Size (bytes)195,805,44048,237,120
Size186.7 MB 46.0 MB
Events in quadrant A1,244,974328,047
Events in quadrant B1,416,564336,276
Events in quadrant C1,319,760316,103
Events in quadrant D1,779,305303,000

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051341
B058751
C054011
D069481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A246230.121852%
B2462120.487409%
C2462301.218522%
D2462963.899269%

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 3482 2463 0 0 0.00% 0.00%
B 3482 2463 4 4 0.11% 0.16%
C 3482 2463 4 4 0.11% 0.16%
D 3482 2463 58 58 1.67% 2.35%

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 15 174 9033 131.86 320 315 66.1
A 13 254 4093 57.14 320 315 66.1
A 0 226 2942 39.73 320 315 66.1
B 0 219 39708 630.3 322 315 62.5
B 3 64 38012 603.16 322 315 62.5
B 0 228 17732 278.68 322 315 62.5
C 0 207 64495 858.93 309 310 74.7
C 14 238 46800 622.14 309 310 74.7
C 13 61 2185 25.09 309 310 74.7
D 1 20 291738 3769.38 309 299 77.3
D 12 233 113297 1461.48 309 299 77.3
D 7 38 32871 421.28 309 299 77.3

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