ASTROSAT CZTI

Data Quality Report

Orbit 20148

Creation date: 2024-06-27T18:11:48.936267
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/AS1A05_180T01_9000002992_20148cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20148cztM0_level2_quad_clean.evt
Size (bytes)1,693,301,760282,479,040
Size1.6 GB 269.4 MB
Events in quadrant A12,754,8501,831,121
Events in quadrant B10,747,2121,877,137
Events in quadrant C11,095,4811,766,629
Events in quadrant D15,291,6131,658,807

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505274
B0441804
C0453024
D0591424

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04220
B04220
C04220
D04220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A206409184.447674%
B206412171.051306%
C206402851.380814%
D2064018849.127907%

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 25511 20644 462 462 1.81% 2.24%
B 25512 20645 9 9 0.04% 0.04%
C 25511 20644 17 17 0.07% 0.08%
D 25511 20643 696 696 2.73% 3.37%

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 14 238 2334116 4349.59 2702 2664 536.0
A 0 226 23326 38.55 2702 2664 536.0
A 3 137 21116 34.42 2702 2664 536.0
B 4 80 101070 195.86 2701 2647 502.5
B 12 111 59633 113.4 2701 2647 502.5
B 11 111 53297 100.79 2701 2647 502.5
C 3 233 628058 1061.89 2567 2596 589.0
C 14 238 415059 700.27 2567 2596 589.0
C 0 207 43036 68.66 2567 2596 589.0
D 1 52 4413274 7307.78 2523 2455 603.6
D 11 176 659967 1089.36 2523 2455 603.6
D 1 20 198643 325.04 2523 2455 603.6

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