ASTROSAT CZTI

Data Quality Report

Orbit 10085

Creation date: 2024-06-27T15:54:41.857425
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/AS1A03_044T04_9000001448_10085cztM0_level2.evt modeM0/AS1A03_044T04_9000001448_10085cztM0_level2_quad_clean.evt
Size (bytes)1,468,704,960260,346,240
Size1.4 GB 248.3 MB
Events in quadrant A10,183,3451,599,586
Events in quadrant B10,424,6341,629,131
Events in quadrant C9,697,1891,598,081
Events in quadrant D12,687,8941,544,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460052
B0463212
C0450512
D0525404

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04440
B04440
C04440
D04440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219971730.786471%
B219972601.181979%
C21997950.431877%
D219963201.454810%

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 23142 21999 6 6 0.03% 0.03%
B 23142 22000 11 11 0.05% 0.05%
C 23142 22000 3 3 0.01% 0.01%
D 23142 21999 151 151 0.65% 0.69%

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 0 8 220342 424.14 2542 2487 513.6
A 8 15 118425 225.72 2542 2487 513.6
A 4 2 37153 67.49 2542 2487 513.6
B 0 214 195516 392.8 2561 2493 491.4
B 4 239 84417 166.71 2561 2493 491.4
B 4 81 67464 132.21 2561 2493 491.4
C 14 234 24819 39.01 2473 2482 572.6
C 14 67 20211 30.96 2473 2482 572.6
C 13 61 18232 27.51 2473 2482 572.6
D 8 195 1283529 2063.29 2446 2383 620.9
D 10 199 760173 1220.42 2446 2383 620.9
D 2 152 449057 719.37 2446 2383 620.9

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